NOTE that the quadratic formula can be used to solve for x after the value for y has been substituted into the othe equation.
Ulises V.
asked • 12/04/23What equations do i uue for this?
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Mark M. answered • 12/04/23
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Mathematics Teacher - NCLB Highly Qualified
Use substitution
y = x2 + 7x
3x - y = -21
3x - ( x2 + 7x) = -21
Can you solve for x and answer?
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