Question

PLEASE HELPPP SOLVE FOR X, these are two separate question’s

Answer 1

(X-5)^2 = 81

X^2+25-10x=81
X^2-10x = 81-25
X(x-10). =. 56


X= 56. , X-10=. 56

X= 66


56, 66

Answer 2

`\textbf{3)}\\\\~~~~~3x^2\cdot 5 = 80\\\\\implies 15x^2 = 80\\\\\implies x^2 = (80)/(15)\\\\\implies x^2 = \frac{16}3\\\\\implies x = \pm\sqrt{\frac{16}3}\\\\\implies x = \pm \frac 4{\sqrt 3}\\\\\textbf{4)}\\\\~~~~~~(x-5)^2 = 81\\\\\implies x -5 =\pm√(81)\\\\\implies x -5 = \pm9\\\\\implies x = 5\pm9\\\\\implies x = -4,~ x = 14`