Question

-2x +8 = 9x²
Quadratic equation

Answer 1

9x²+2x-8

is the quadratic equation

Answer 2

Answer:

Step by step solution :

STEP

1

:

Equation at the end of step 1

(32x2 - 2x) - 8 = 0

STEP

2

:

Trying to factor by splitting the middle term

2.1 Factoring 9x2-2x-8

The first term is, 9x2 its coefficient is 9 .

The middle term is, -2x its coefficient is -2 .

The last term, "the constant", is -8

Step-1 : Multiply the coefficient of the first term by the constant 9 • -8 = -72

Step-2 : Find two factors of -72 whose sum equals the coefficient of the middle term, which is -2 .

-72 + 1 = -71

-36 + 2 = -34

-24 + 3 = -21

-18 + 4 = -14

-12 + 6 = -6

-9 + 8 = -1

-8 + 9 = 1

-6 + 12 = 6

-4 + 18 = 14

-3 + 24 = 21

-2 + 36 = 34

-1 + 72 = 71