SOLUTION: Solve: Y+10=y(y+3)

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Question 164237: Solve: Y+10=y(y+3)
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
y%2B10=y%28y%2B3%29
y%2B10=y%5E2%2B3y
y%5E2%2B2y-10=0
y=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+
y+=+%28-2+%2B-+sqrt%28+4-4%2A1%2A%28-10%29+%29%29%2F%282%2A1%29+
y=%28-2+%2B-+sqrt%28+4%2B40+%29%29%2F%282%29+
y=%28-2+%2B-+sqrt%2844%29%29%2F%282%29+
y=%28-2+%2B-+2%2Asqrt%2811%29%29%2F%282%29+
y=%28-1+%2B-+sqrt%2811%29%29+
or approximately,
y=+2.32
y=-4.32
Check the solution by graphing the equation.
+graph%28+300%2C+300%2C+-5%2C+5%2C+-10%2C+10%2C+x%5E2%2B2x-10%29+