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How do you simplify x2 -x-20 over x2 plus 8x plus 16?
(x2 - x - 20) / (x2 + 8x + 16) = [(x - 5)(x + 4)] / (x + 4)2 = (x - 5) / (x + 4)
If y equals -2 when x equals 4 find x when y equals 5?
x1:y1 = x2:y2 4:-2 = x2:5 x2 = (4*5)/-2 x2 = -10
Solve by squaring X2 equals 5x plus 2?
To solve for x: x2 = 5x + 2 x2 - 5x = 2 x2 - 5x + (5/2)2 = 2 + (5/2)2 (x - 5/2)2 = 8/4 + 25/4 x - 5/2 = ± √(33/4) x = (5 ± √33) / 2
What is 4 over 5 plus 2 over 3?
The answer is x2/36+(82+y3n) over 17 squared
What is the solution set of x2 plus 5x - 5 equals 0?
x2 + 5x - 5 = 0 ∴ x2 + 5x + 25/4 = 45/4 ∴ (x + 5/2)2 = 45/4 ∴ x + 5/2 = ±√(45/4) ∴ x = -5/2 ± 3√(5)/2 ∴ x = (-5 ± 3√5)/2 ∴ x ∈ {(-5 - 3√5)/2, (-5 + 3√5)/2}
Find the center and radius of a circle with equation X2 plus y2 plus x equals 0?
x2 + y2 - 5y + 4 = 0 x2 + y2 - 5y = - 4 x2 + y2 - 5y + 25/4 = - 4 + 25/4 = 9/4 x2 + (y - 5/2)2 = (3/2)2 Centre = (0, 5/2) and radius = 3/2
x2+x-6 over x2-x-2 (fraction) multiply by x2+11x+24 over x2-x-2 (fraction) divide by x+3 over x2+3x+2.multiply and divide as indicated. please help?
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What number must you add to complete the square x2 plus 4x equals 5?
Add 4 to both sides. To complete the square, take half the x coefficient into the bracket: (x + 4/2)2 = (x + 2)2 = x2 + 4x + 4 Comparing with the original, need to add 4 to both sides of x2 + 4x = 5: (x2 + 4x) + 4 = (5) + 4 ⇒ x2 + 4x + 4 = 9 ⇒ (x + 2)2 = 9
If the distance between the point 5-3 and x 1 is 5 units find x?
Final solution, x = 2 ----- WORK ----- (5, -3) (X2, 1) (X1, Y1) (X2, Y2) D = SQRT( [X1 - X2]2 + [Y1 - Y2]2 ) 5 = SQRT( [5 - X2]2 + [-3 - 1]2 ) 5 = SQRT( [5 - X2]2 + (-4)2 ) 5 = SQRT( [5 - X2]2 + 16 ) Since The square root of 25 is 5, we know that -> [5 - X2]2 + 16 = 25 Subtract 16 from both sides, [5 - X2]2 = 9 Which means that 5-X2 = 3 Because 32 is 9 5 - X2 = 3 subtract 5 from both sides -X2 = -2 multiply both sides by -1 X2 = 2 There you go... X2 = 2 (5, -3) (2, 5)
Is 4 out of 10 equal to 2 out of 5?
Obviously , LOL . 2/5 x2 = 4/10
What is x2 plus x2 mean?
If you have an equation of x2 plus x2, it is the same as saying 2 times x plus 2 times x. This can be written as 2x + 2x or x2 + x2. It is the same, then, as 4x. For example, if x equals 5: 2(5) + 2(5) = 10 + 10 = 20. 20 also equals 4(5).
X2 plus 8x-5 equals 0?
if you mean X²+8X-5=0: X1=-8/2 - Square root of ((8/2)²+5) X1=-4 - Square root of 21 X1 is about -8.58 X2=-8/2 + Square root of ((8/2)²+5) X2=-4 + Square root of 21 X2 is about 0.58
