Question

5x^2 + 15x - 140 =0​

Answer 1

Answer:

5x2-15x-140=0

Two solutions were found :

x = 7

x = -4

Step by step solution :

Step 1 :

Equation at the end of step 1 :

(5x2 - 15x) - 140 = 0

Step 2 :

Step 3 :

Pulling out like terms :

3.1 Pull out like factors :

5x2 - 15x - 140 = 5 • (x2 - 3x - 28)

Answer 2

Answer:

5x^2 -15x-140=0

x^2-3x-28=0

(x-7)(x+4)=0