The mistake is in Step 1. The solver should have also squared when squaring the other side of the equation.
Answer:
x = 25
Step-by-step explanation:
The mistake here is the squaring. When you square one side, you have to do the same on the other side:
= 9
=
3x + 6 = 81
3x = 75
23
the correct answer is A. 70°
11/5−7/4+2/1
=49/20(Decimal: 2.45)