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What's the Quadratic Formula?
y = -b +/- SqRoot( b)squared - 4( a ) (c) / 2 ( a )
6x+8y=-22
y=-5
6x+8(-5)=-22
x=5
x+y=12
y=7
x= - 7
x+y=12
y = 19
What's the square root of 3^2 - (4)(1)(4)
25
-2x+7y=-9
y=x-2
-2x+7(x-2)=-9
-2x+4y=-16
y=x-2
y= -6
x= -4
y = 2x + 15
y = 5x
x = 5
( 5, 25 )
What is (-4)(-1)(-48)
-192
y=2x-3
y=-2x+9
2x-3=-2x+9
y=4x-9
x-y=3
y=-1
x=2
x^2 + 3x - 4 = 0
x = -4 and x = 1
a line ( rise over run ) on a graph is what kind of equation?
linear equation
y=3x+2
y=-3x+8
3x+2=-3x+8
-2x+7y=-9
y=x-2
x=1
y=-1
2y + 6 = x
y - 9 = x
( - 24 , -15 )
a parabola is what kind of equation?
quadratic
y=4x-9
x-y=3
x-(4x-9)=3
y=x^2+2x-8
y= -2x+4
( 2, 6)
2x^2 + 18x = -40
Solve for x1 & x2
( - 8, -10 )