-1
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x2 + 8x - 9
This can be factored:
(x+9)(x-1)
x+9 = 0 x-1 = 0
x=-9 x=1
So the zeros are -9 and 1
x[x+1] squared Simplified is, to my knowledge, x squared plus ( x + 1) squared
(a + x^2)(b + y^2)
One plus cosecant squared x is equal to cotangent squared x.
It is a quadratic expression in the variables x and y.
x^2+x^2=2x^2