If it's not what You are looking for type in the equation solver your own equation and let us solve it.
X^2-12X-42=-5X+2
We move all terms to the left:
X^2-12X-42-(-5X+2)=0
We get rid of parentheses
X^2-12X+5X-2-42=0
We add all the numbers together, and all the variables
X^2-7X-44=0
a = 1; b = -7; c = -44;
Δ = b2-4ac
Δ = -72-4·1·(-44)
Δ = 225
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$X_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$X_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$\sqrt{\Delta}=\sqrt{225}=15$$X_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-7)-15}{2*1}=\frac{-8}{2} =-4 $$X_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-7)+15}{2*1}=\frac{22}{2} =11 $
| 5a/8a+6=3a/4a | | X^2-5x-23=1 | | f(5)=−1f(0)=−5 | | x^2+13=61 | | p2-9p+6=0 | | 9+x/4=32 | | 3(2x+4)-1x=5x-9 | | 351=18x+(1/2)(x-4)(x) | | 48-u=7u | | -5x-3×=-56 | | 7v-(6+2v)=12 | | f(5)=−1f(0)=−5. | | 5(w+3)-7w=27 | | 11=3u-16 | | x+(5/100)=105 | | 133=3x-5(5x+13) | | (2x)=68 | | 4x/10/3x=80 | | 5(x+4)=4x+x+6+14 | | 4x/103x=80 | | 4x+9+14=3x+16+1x | | 6p=246 | | X*0.5*x=162 | | -5(8a+4)=-180 | | x-3/5=23/10 | | x=105-(5/100) | | 3x+75=45 | | 9-6+x=(.5x+.5x+3) | | 1728=x(x+12) | | 5=2+(1/3)x | | 9y+33=-6(y+2) | | x+75=35 |