Question

 mn ơi, làm hộ mình câu này với(mình cần gấp) ai làm nhanh nhất mình tim cho

Answer 1

\(\left(2x+3\right)^3=\left(-25\right).\left(-5\right)\)

\(\Leftrightarrow\left(2x+3\right)^3=125\)

\(\Leftrightarrow\left(2x+3\right)^3=5^3\)

\(\Leftrightarrow2x+3=5\)

\(\Leftrightarrow2x=2\)

\(\Leftrightarrow x=1\)

Answer 2

\(\left(2x+3\right)^3=\left(-25\right).\left(-5\right)\)

\(\Leftrightarrow\left(2x+3\right)^3=5^3\)

\(\Leftrightarrow2x+3=5\)

\(\Leftrightarrow2x=2\)

\(\Leftrightarrow x=1\)

Answer 3

(2x+3)³ = 125

(2x+3)³ = 5³

=> 2x + 3 = 5

2x= 5+3

2x=8

x=4

Answer 4

\(\Leftrightarrow\left(2x+3\right)^3=\left(-5\right)^3\\ \Leftrightarrow2x+3=-5\\ \Leftrightarrow2x=-8\\\Leftrightarrow x=-4\)