x squared -24x = -44
x squared -2x = 5
use (b/2) squared format
x squared -2x = 5
use (b/2) squared format
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This is called " completing the square"
1) X^2 -24x = -44
b/2= -24/2= -12
(-12)^2 = 144; add 144 to both sides, then factor:
X^2 -24x + 144= -44+ 144
(x-12)^2 = 100
Find the square root of both sides:
(x-12)= +/- 10
X= 12+/-10
X= 22 or 2
2) X^2 -2x= 5
(-2/2)^2 = 1; add 1 to both sides
X^2 -2x + 1= 6
(x-1)^2 = 6
X-1= +/- sqrt(6)
X= 1+/- sqrt(6)
I hope this helps!
1) X^2 -24x = -44
b/2= -24/2= -12
(-12)^2 = 144; add 144 to both sides, then factor:
X^2 -24x + 144= -44+ 144
(x-12)^2 = 100
Find the square root of both sides:
(x-12)= +/- 10
X= 12+/-10
X= 22 or 2
2) X^2 -2x= 5
(-2/2)^2 = 1; add 1 to both sides
X^2 -2x + 1= 6
(x-1)^2 = 6
X-1= +/- sqrt(6)
X= 1+/- sqrt(6)
I hope this helps!
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x^2 - 24x = - 44
x^2 - 24x + 44 = 0 factor this equation
(x-2)(x-22) = 0
so the 2 solutions are: x = 2, and x = 22
x^2 - 2x = 5
x^2 -2x - 5 = 0 use the quadratic equation
x =( -(-2) +/- sqrt(4 - 4(1)(-5))/2
x = (2 +/- sqrt(24))/2
x = (2 +/- 2sqrt(6))/2
x = 1 +/- sqrt(6)
x^2 - 24x + 44 = 0 factor this equation
(x-2)(x-22) = 0
so the 2 solutions are: x = 2, and x = 22
x^2 - 2x = 5
x^2 -2x - 5 = 0 use the quadratic equation
x =( -(-2) +/- sqrt(4 - 4(1)(-5))/2
x = (2 +/- sqrt(24))/2
x = (2 +/- 2sqrt(6))/2
x = 1 +/- sqrt(6)