Solving by factoring
Solve this quadratic equation by factoring.
x^2 +2x=3
x=-3 , x=1
Solve
x^2-8x+16=1
by completing the square.
x=3, x=5
Is this the quadratic formula?
x=(-bpmsqrt(b^2-4ac))/2
No!! The denominator should be
2a
Solve this equation by taking square roots.
x^2-81=0
x=-9, x=9
x^2+2x-8=0
x=2, x=-4
Solve this quadratic equation by factoring.
x^2 +16=10x
x=2, x=8
Solve
x^2-20x+19=0
by completing the square.
x=1, x=19
Solve
6x^2+12x=90
using the quadratic formula.
x=-5, x=3
Solve this equation by taking square roots.
x^2-121=0
x=11, x=-11
2x^2-x-4=2
x=-3/2 , x=2
Solve this quadratic equation by factoring.
18x^2 -3x=6
x=2/3, x=-1/2
Solve
x^2+4x-14=0
by completing the square.
x=-2+3sqrt2, x=-2-3sqrt2
Solve
x^2-8x+14=0
using the quadratic formula. Leave your answer in simplest radical form.
x=4pmsqrt2
Solve this equation by taking square roots.
1+x^2=26
x=-5, x=5
49x^2-81=0
x=-9/7 , x=9/7
Solve this quadratic equation by factoring.
x^2 -x-35=-x+1
x=-6, x=6
Solve
x^2-6x-3=0
by completing the square.
x=3+2sqrt3 , x=3-2sqrt3
Solve
x^2+4x-21=0
by using quadratic formula.
x=3, x=-7
Solve this equation by taking square roots.
(x-4)^2-16=0
x=0, x=8
-3x^2-15x-18=0
x=-2, x=-3
Solve this quadratic equation by factoring.
2x^2 -8=31x-2x^2
x=-1/4, x=8
Solve
4x^2+16x=65
by completing the square.
x=5/2, x=-13/2
Solve
2x^2=7x+6
by using quadratic formula. Round your answer(s) to the nearest hundredth.
x=4.21, x=-0.71
Solve this equation by taking square roots.
-3(x+1)^2+27=0
x=2, x=-4
x^2-10x+20=0
x=5pmsqrt5