(y + 7).(y + 7) = zero
y + 7 = zero
and so y = -7
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(y + 7)(y + 7)
25 squared plus 49 squared is equal to 3,026.
set it up as x+5y=10 and 7x-14y=49 on top of each other and then multiply x+5y=10 by -7. That gives you -7x-35y=-70. cross out the X's and add the Y's. -21y=21 divide and get -1=y then sub. for x and solve. X=15 and X=5
3 + 43 = 46 7 squared = 49 46 + 49 = 95
x=7