Question

5.2² + (x + 3) = 5²

^{giúp nha}

Answer 1

5.2²+(x+3)=5²

5.4+(x+3)=25

20+(x+3)=25

⇒x+3=5

⇒x=2

 

Answer 2

\(5.2^2+\left(x+3\right)=5^2\Rightarrow5.4+\left(x+3\right)=25\Rightarrow4+\left(x+3\right)=25:5\Rightarrow4+\left(x+3\right)=5\Rightarrow x+3=5-4\Rightarrow x+3=1\Rightarrow x=3-1\Rightarrow x=...\)

Answer 3

20 + x + 3 = 25

<=> x = 25 - 20 - 3

<=> x = 2

Answer 4

5.2²+(x+3)=5²

20+(x+3)=25

x+3=25-20

x+3=5

x=5-3

x=2