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Q: 25 21 X 2

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105 x 2 21 x 10

-2x +67.1) -3x + 25 + x + (21)(2)2) -2x + 25 + (21)(2).3) -2x + 25 + 424) -2x +67.Step 1: The first thing we want to do with an algebraic expression like this is combine all of the common variables together. If it helps, you can reorder the terms, making it -3x + x + 25+ (21)(2). Adding these variables gets us -3x + x = -2x.Explanation:(The 3 in 3x just signifies there are 3 xs. It can also be written (-x - x - x) + x ) Variables can be added together like any other number if they have a common base (x) and the same exponent (Since there is no exponent on either, they are both one. If you haven't covered exponents yet, ignore this). So, -3 + 1 = -2.Step 2:Now we have -2x + 25 + (21)(2). Next, we will multiply or divide. (order of operations: PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction, carried out after dealing with the variables.) I am not sure if 21 2 means (21)(2), 21 times 2, so I will assume it is unless you update the question. If it does, multiply them together to get 42.Step 3:Now you have -2x + 25 + 42. The next step is addition/subtraction. So, add together 25 and 42. 25 + 42 = 67. Variables and cannot be added with non-variables, so this was our last step.We are now left with the answer, -2x +67.

( x^2 - 25 ) = ( x + 5 ) ( x - 5 ) <--------------------------

x = 25^2 = 25*25 = 625.

2/3 x 21 = 2 x 21 / 3 = 14

Related questions

(25 +21) * 2 = 92 25 + (21 * 2) = 67

x/2 = 21 x = 42

You have x+4=25 so you minus the four from four and you minus the four from the 25 . and then you get 21 so it is x=21

The answer is 109. 21 + (1 x 28) = 49 22 + (2 x 28) = 78 25 + (3 x 28) = 109

105 x 2 21 x 10

(10/21) x (-7/25) = -70/525 = -2/15

the answer is 46. That is obtained by solving the equation 21+x=71-x. Then we will obtain x as 25.So ans is 21+25=71-25.

Expressed as a percentage, 21/25 x 100% = 84%

No. To convert 25/40 to something/84, multiply top and bottom by 84 ÷ 40 = 21/10 40 x 21/10 = 84 25 x 21/10 = 521/2 ≠ 60

Two specific cases of pairs of numbers whose product is 21 are: 1 x 21 and 3 x 7. The ratio of their sum to their difference is: 1 x 21 ... (21+1):(21 - 1) = 22:20 = 11 : 10, and 3 x 7 ... (3+7):(7-3) = 10:4 = 5 : 2. To find a general formula, let the larger number be x and the smaller be 21/x. Their sum is x + 21/x = (x^2 +21)/x Their difference is x - 21/x = (x^2 -21)/x Ratio of sum to difference is [(x^2+21)/x] / [(x^2-21)/x] = [(x^2+21)/x] * [x/(x^2-21)] = (x^2+21)/(x^2-21) Check: This formula produces the results found above.

If the order of the five in the set makes a difference, there are (25 x 24 x 23 x 22 x 21) = 6,375,600 sets.If the order doesn't matter, then there are (25 x 24 x 23 x 22 x 21) / (5 x 4 x 3 x 2 x 1) = 53,130 sets.

-2x +67.1) -3x + 25 + x + (21)(2)2) -2x + 25 + (21)(2).3) -2x + 25 + 424) -2x +67.Step 1: The first thing we want to do with an algebraic expression like this is combine all of the common variables together. If it helps, you can reorder the terms, making it -3x + x + 25+ (21)(2). Adding these variables gets us -3x + x = -2x.Explanation:(The 3 in 3x just signifies there are 3 xs. It can also be written (-x - x - x) + x ) Variables can be added together like any other number if they have a common base (x) and the same exponent (Since there is no exponent on either, they are both one. If you haven't covered exponents yet, ignore this). So, -3 + 1 = -2.Step 2:Now we have -2x + 25 + (21)(2). Next, we will multiply or divide. (order of operations: PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction, carried out after dealing with the variables.) I am not sure if 21 2 means (21)(2), 21 times 2, so I will assume it is unless you update the question. If it does, multiply them together to get 42.Step 3:Now you have -2x + 25 + 42. The next step is addition/subtraction. So, add together 25 and 42. 25 + 42 = 67. Variables and cannot be added with non-variables, so this was our last step.We are now left with the answer, -2x +67.

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