a = -4
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Square root of 25= 5. 5 + 144 + 13 = 162.
If you multiply it by itself you get 13. This is what square roots do!
x2+10x+1 = -12+2x x2+8x+13 = 0 The solution: x = -4 + the square root of 3 or x = -4 - the square root of 3
87
True