x2 - 15 = 2x
x2 - 2x - 15 = 0
x2 - 2x - 15 = (x - 5)(x + 3)
x = 5, -3
This can easily be solved using algebra. First, translate the meaning of the sentence into an algebraic equation.supposing x is the number,-15 + 3 = 2(x)-12 = 2xx = -6
13
the number is negative two.
The difference between a number x and twice y is equal to fifteen.
8
This can easily be solved using algebra. First, translate the meaning of the sentence into an algebraic equation.supposing x is the number,-15 + 3 = 2(x)-12 = 2xx = -6
13
the number is negative two.
If the first number is 100 then the second number is 50 and the sum is 150. If the second number is 100 then the first number is 200 and the sum is 300. The question cannot be answered with one solution as it is currently worded.
2x + 5 = 152x = 10x = 5The number is 5.
The difference between a number x and twice y is equal to fifteen.
8
Twice the number is something like 3x2, 4x2.... Squared is 3x3, 4x4. It's one number multiplied by itself twice
Let's call the larger number 2x+3 and the smaller number x: 2x+3+x = 36 2x+x = 36-3 3x = 33 x = 11 So: 2*11+3 = 25 which is the value of the larger number.
It's a square number. Square numbers have a factor pair that is the same number twice. When listed, that number occurs once.
2*24.5 = 49
15+2*n = 9 2*n = -6 n = -3