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10.03 Solving quadratic equations using square roots

Interactive practice questions

Is $y=-2$y=2 a solution of $5y^2+4y=-12$5y2+4y=12?

Yes

A

No

B
Easy
< 1min

Is $x=\frac{1}{4}$x=14 a solution of $48x^2+16x-7=0$48x2+16x7=0?

Easy
< 1min

Is $x=\frac{8}{7}$x=87 a solution of $\left(7x-2\right)^2=37$(7x2)2=37?

Easy
< 1min

Is $x=-\frac{3}{4}$x=34 a solution of $20x^2=3-11x$20x2=311x?

Easy
1min
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Outcomes

A1:A-REI.B.4

Solve quadratic equations in one variable.

A1:A-REI.B.4b

Solve quadratic equations by inspection (e.g., for x² = 49), taking square roots, completing the square, the quadratic formula, and factoring, as appropriate to the initial form of the equation. Recognize when the quadratic formula gives complex solutions and write them as "no real solution."

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