Question

8 x square - 22 x_ 21 = 0​

Answer 1

Answer: x = 7/2 or x = -3/4

Step-by-step explanation:

8x^2 - 22x - 21 = 0

8x^2 -(28-6)x - 21 = 0

8x^2 -28x + 6x - 21 = 0

4x(2x - 7) + 3(2x-7) = 0

(2x - 7)×(4x + 3) = 0

2x-7 = 0 or 4x+3 = 0

x = 7/2 or x = -3/4.