Question

(x+7)³=-27

Answer 1

(x+7)^3=(-3)^3

x+7= -3

x= -3 -7

x= -10

HT

Answer 2

\(\left(x+7\right)^3=-27\\ \left(x+7\right)^3=\left(-3\right)^3\\ \Rightarrow x+7=-3\)

\(x=-3+7=4\)

Answer 3

\(\left(x+7\right)^3=-27\)

\(\Rightarrow x+7=-3\)

\(x=-3+7\)

\(x=5\)

Answer 4

\(\left(x+7\right)^3=\left(-3\right)^3\Rightarrow x+7=-3\Rightarrow x==10\)

Answer 5

 (x +7)^3=-27

<=>(x+7)^3=(-3)^3

<=>x+7=-3

<=> x=-10

Answer 6

\(\left(x+7\right)^3=-27\)

\(\Rightarrow\left(x+7\right)^3=-3^3\)

\(\Rightarrow x+7=-3\)

\(\Rightarrow x=-3-7\)

Vậy \(x=-10\)