Question

Rezolvati in R ecuatia:
√(1-3x)²=7

Answer 1

$\sqrt{(1-3x) ^{2} } =7 \\ |1-3x|=7 \\ 1.) 1-3x=7 \\ -3x=6 \\ x=-2 \\ 2.)1-3x=-7 \\ -3x=-8 \\ x= \frac{8}{3}$