Question

plzzzzzzzz help solve it​

Answer 1

Answer:

x=8, x= -21/2

Step-by-step explanation:

2x²+5x-168=0

Step 1:

2x²+(21x-16x)-168 = 0, this can also be written as (2x²+21x)-(16x-168)=0

Step 2:

x(2x+21) - 8(2x+21) = 0

Step 3:

(2x+21)(x-8)=0

Answer:

x= -21/2, x=8