Question

-10 + sqrt x+8= -4 can someone take me step by step on how to solve this ?

Answer 1

\(\bf -10 + \sqrt{x}+8= -4 \qquad\qquad {\color{brown}{ +10\ and -8}}
\\ \quad \\
\cancel{ -10 {\color{brown}{ +10}} }+ \sqrt{x}\cancel{ +8{\color{brown}{ -8}} }= -4{\color{brown}{ +10}}{\color{brown}{ -8}}\implies \sqrt{x}=-2\qquad \qquad {\color{brown}{ ^2}}
\\ \quad \\
(\sqrt{x})^{\color{brown}{ 2}}=(-2)^{\color{brown}{ 2}}\implies x=+4\)

Answer 2

the sqrt goes over both the x and the 8

Answer 3

then is the same thing... you 'd just add +10 only then
and then square both sides

Answer 4

the idea is just to isolate the root on the left-hand-side

then square both sides

Answer 5

oh okay thanks

Answer 6

yw