Complete the steps in solving the quadratic function 7x - 9 = 7x2 - 49x by completing the square

x={-sqrt (103/7) + 4, sqrt (103/7) + 4}

Step-by-step explanation:

Subtract 7x from both sides: 7x^2-56x=-9

Divide both sides by 7: x^2-8x=-9/7

Solve for a (2ax=-8x) : - 4

Plug a back in: - 9/7 + (-4) ^2=103/7

Complete the square: (x-4) ^2=103/7

Therefore, x={-sqrt (103/7) + 4, sqrt (103/7) + 4}