Answer:
x =-2 or 0
Explanation:
Factoring 7x2+3x-34
The first term is, 7x2 its coefficient is 7 .
The middle term is, +3x its coefficient is 3 .
The last term, "the constant", is -34
Step-1 : Multiply the coefficient of the first term by the constant 7 • -34 = -238
Step-2 : Find two factors of -238 whose sum equals the coefficient of the middle term, which is 3 .
-238 + 1 = -237
-119 + 2 = -117
-34 + 7 = -27
-17 + 14 = -3
-14 + 17 = 3 That's it
Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, -14 and 17
7x2 - 14x + 17x - 34
Step-4 : Add up the first 2 terms, pulling out like factors :
7x • (x-2)
Add up the last 2 terms, pulling out common factors :
17 • (x-2)
Step-5 : Add up the four terms of step 4 :
(7x+17) • (x-2)
Which is the desired factorization
(x - 2) • (7x + 17) = 0