8. Systems
8.11 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+16x−7=0?
Easy
< 1min
Is $x=\frac{8}{7}$x=87 a solution of $\left(7x-2\right)^2=37$(7x−2)2=37?
Easy
< 1min
Is $x=-\frac{3}{4}$x=−34 a solution of $20x^2=3-11x$20x2=3−11x?
Easy
1min
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