x2+2x-15
The answer depends on whether or not the 8 is part of the squared: (8x) squared times 2x = 128x38 x2 times 2x = 16x3
x2 - (2x)2 = x2 - 4x2 = -3x2 x2 - 2x2 = -x2
What are the factors of x2 + 2x?
What do you want to convert it to? x2 + y2 = 2x If you want to solve for y: x2 + y2 = 2x ∴ y2 = 2x - x2 ∴ y = (2x - x2)1/2 If you want to solve for x: x2 + y2 = 2x ∴ x2 - 2x = -y2 ∴ x2 - 2x + 1 = 1 - y2 ∴ (x - 1)2 = 1 - y2 ∴ x - 1 = ±(1 - y2)1/2 ∴ x = 1 ± (1 - y2)1/2
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).
The antiderivative of 2x is x2.
4
2x = x2 + 4x - 3 x2 + 2x - 3 = 0 (x - 1)(x - 2) = 0
x2/2x = x2-1/2 = x/2
It factors as (x2 -2x+2)(x2 +2x+2)
x2 + 2x - 3 = (x + 3)(x - 1)