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X 2 4x 21 0
X 2 4x 21 0 pictures 5
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X 2 4x 21 0
x 2 4x 21 0 quadratic equation
x 2 4x 21 0 in factored form
x 2 4x 21 0 solutions
x 2 4x 21 0 factor
x 2 4x 21 0 number of roots
x 2 4x 21 0 sum product roots
x 2 4x 21 0 discriminant
x 2 4x 21 0 quadratic formula
x 2 4x 21 0 complete the square
x 2 4x 21 0
