Answer:
vertical
Step-by-step explanation:
did the test
2x^2 + 8x - 9 = 0
2x^2 + 8x = 9
2x^2 + x = 9/8
x^2 + x = 9/8×2
x^2 + x = 9/16
2x = √9/16
x = √9/32
Answer: Step by step
d