Answer:
1. 2x²-50=0 transpose 50
2x²=50 divide by 2
2x²/2 =50/2
ײ=25
x²=sqroot of 25
x= sqrt 25 ×= negative sqroot 25 get the sqroot of 25
×=5 x=-5
2. 3y²-147=0
3y²=147
3y²/3 =147/3
y²=49
y= sqrt 49 y= negative sqrt 49
y= 7 y=-7
3. (w+7)²= 196
w+7= sqrt 196 w+7 = negative sqrt 196
w+7=14 transpose 7 w+7=-14
w= 14-7 =7 w=-14-7 = -21
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Answers & Comments
Answer:
1. 2x²-50=0 transpose 50
2x²=50 divide by 2
2x²/2 =50/2
ײ=25
x²=sqroot of 25
x= sqrt 25 ×= negative sqroot 25 get the sqroot of 25
×=5 x=-5
2. 3y²-147=0
3y²=147
3y²/3 =147/3
y²=49
y= sqrt 49 y= negative sqrt 49
y= 7 y=-7
3. (w+7)²= 196
w+7= sqrt 196 w+7 = negative sqrt 196
w+7=14 transpose 7 w+7=-14
w= 14-7 =7 w=-14-7 = -21