Question

find the value of 9x^2+2x-5​

Answer 1

Answer:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

9*x^2-(2*x-5)=0

Step by step solution :

STEP

1

:

Equation at the end of step 1

32x2 - (2x - 5) = 0

STEP

2

:

Trying to factor by splitting the middle term

2.1 Factoring 9x2-2x+5

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

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

The last term, "the constant", is +5

Step-1 : Multiply the coefficient of the first term by the constant 9 • 5 = 45

Step-2 : Find two factors of 45 whose sum equals the coefficient of the middle term, which is -2 .

-45 + -1 = -46

-15 + -3 = -18

-9 + -5 = -14

-5 + -9 = -14

-3 + -15 = -18

-1 + -45 = -46

1 + 45 = 46

3 + 15 = 18

5 + 9 = 14

9 + 5 = 14

15 + 3 = 18

45 + 1 = 46

Observation : No two such factors can be found !!

Step-by-step explanation: