Answer:
[tex]7(x - 4) {}^{2} - 18 = 10 \\ 7 {x}^{2} - 56x + 112 - 18 - 10 = 0 \\ 7x {}^{2} - 56x + 84 = 0 \\ (x - 6)(x - 2) = 0 \\ x = 2 \: and \: 6[/tex]
7(x-4)2-18=12
x=6
Step-by-step explanation:
7(x-4)2-18=10
simplify:
14x-74=10
group all constants on the right side of the equation:
14z-74=10
14x-74+74=10+74
14x=10+74
14x=84
isolate the x:
14x/14 = 84/14
x=84/14
