y1=-7
y2=7
alternate: y=±7
Step-by-step explanation:
=2y²-98=0
2 2
=y²-49=0
=y²=49
=√y²=√49
ans. y=±7
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y1=-7
y2=7
alternate: y=±7
Step-by-step explanation:
=2y²-98=0
2 2
=y²-49=0
=y²=49
=√y²=√49
ans. y=±7