Question

) If (7-3)2 x 7x+4 = 77, find the value of x.

Answer 1

Solve for x:

56 x^2 + 4 = 77

Subtract 4 from both sides:

56 x^2 = 73

Divide both sides by 56:

x^2 = 73/56

Take the square root of both sides:

Answer: |

| x = sqrt(73/14)/2 or x = -sqrt(73/14)/2