Mister Exam
Other calculators
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How to use it?
- Factor polynomial:
- x^2+x-2
- x^2-x-2
- t^4/4+4*t^3/3
- 2*x^3+3*x^2+3*x+1
- Least common denominator:
- exp(x)/x^7-7*exp(x)/x^8
- x^2*log(x)/2-x^2/4
- (sin(2*x)/2+x)/2
- (y/(y-10))-(y^2/(y^2-100))
- Factor squared:
- y^4-y^2-8
- y^4-y^2+9
- -y^4+y^2-7
- -y^4-y^2-5
- How do you in partial fractions?:
- -x^2/(x-2)^2+2*x/(x-2)
- -1/(3*x^3)
- -2*sqrt(3)/(3*sqrt(1-(2*x-1)^2/3))
- (5/s)*(2/((1/5)*s+1))*(1/(s+1))
- Factor squared:
- x^2-x-2
- Integral of d{x}:
-
x^2-x-2
- Graphing y =:
- x^2-x-2
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Identical expressions
- x^ two -x- two
- x squared minus x minus 2
- x to the power of two minus x minus two
- x2-x-2
- x²-x-2
- x to the power of 2-x-2
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Similar expressions
- x^2+x-2
- x^2-x+2
Factor polynomial x^2-x-2
The solution
The perfect square
Let's highlight the perfect square of the square three-member
$$\left(x^{2} - x\right) - 2$$
To do this, let's use the formula
$$a x^{2} + b x + c = a \left(m + x\right)^{2} + n$$
where
$$m = \frac{b}{2 a}$$
$$n = \frac{4 a c - b^{2}}{4 a}$$
In this case
$$a = 1$$
$$b = -1$$
$$c = -2$$
Then
$$m = - \frac{1}{2}$$
$$n = - \frac{9}{4}$$
So,
$$\left(x - \frac{1}{2}\right)^{2} - \frac{9}{4}$$
$$\left(x^{2} - x\right) - 2$$
To do this, let's use the formula
$$a x^{2} + b x + c = a \left(m + x\right)^{2} + n$$
where
$$m = \frac{b}{2 a}$$
$$n = \frac{4 a c - b^{2}}{4 a}$$
In this case
$$a = 1$$
$$b = -1$$
$$c = -2$$
Then
$$m = - \frac{1}{2}$$
$$n = - \frac{9}{4}$$
So,
$$\left(x - \frac{1}{2}\right)^{2} - \frac{9}{4}$$