0
x2 +x=3x-5
so x2 -2x+5=0
which does not factor ( over the real numbers) so you can either complete the square of use the quadratic equation to solve.
Let's complete the square.
(x-1)2 =-4
x-1= plus of minus 2i
so x=1+2i or x=1-2i
Now check it just as you would a real answer.
1+2i -1 is 2i
and 2i squared is -4 as desired
Now 1-2i-1 is -2i and (-2i) squared is -4 also.
We know the answer is not real if we simply calculated the discriminant.
b2 -4ac=4-4(5)<0 so there are no real answers as we found.
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What is x2 plus x equals?
x(x + 1)
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x2 + 10x + 21 = (x + 3)(x + 7)
What is a square root of a square?
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15 x 2 = 30
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x(x+4) equals x2 plus 4x
X times x plus 2 equals?
x2 + 2
What is x2 plus 2x-15 equals?
x2 + 2x - 15 = (x - 3)(x + 5)
X2 plus 7 equals 36?
if x2 + 7 = 37, then x2 = 29 and x = ±√29
What is the radius of x2 plus y2 equals 9?
X2 or 2 times x?
What is the answer for 3x equals x2 plus 2?
x = 2
