Question

What are the solutions to the quadric equation x^2-16=0

Answer 1

Answer:

x=4, x=-4

Step-by-step explanation:

x^2-16=0

Add 16 to both sides;

x^2-16+16=0+16

Simplify;

x^2=16

x=$\sqrt{16}$, x$-\sqrt{16}$

$\sqrt{16}$

=4

factor the number;16

$\sqrt{4^2}$

=$\sqrt{4}$

-$\sqrt{16}$

Factor the number 16;

$\sqrt{4^2}$

=-4