Verified answer

1)X=+-5

2)Y=+-7

3)W=7. W=-7

Step-by-step explanation:

1).2x²-50=0

(you put the -50 on the right side)

2x²/2=50/2

(Cancel the 2 and divide the 50 into 2)

X²=25

(then the square root)

√X²=√25

X=+-5

2). 3y²-147=0

(put the -147 on the Right side)

3y²/3=147/3

(Cancel then divide the 147 into 2)

y²=147

(then square root)

√y²=√49

Y=+-7

3. (W+7)²=196

(square root on both sidez)

√(w+7)²=√196

W+7=+-14

(Seperate it into two)

W+7=14. W+7=-14

(put the 7 on the right beside the 14)

W=14-7. W=-14(-7)

Final answerz;

W=7 W=-7