what is the first step in solving the quadratic equation x2 – 40 = 0? taking the square root of both sides of the equation addin

Question

3 years ago

14

g 40 to both sides of the equation squaring both sides of the equation subtracting 40 from both sides of the equation

2 answers:

WARRIOR [948] · Answer 1 · 2022-06-20T13:56:54+03:00

5 0

Adding 40 to both sides of the equation

Orlov [11] · Answer 2 · 2022-06-20T11:45:15+03:00

Orlov [11]3 years ago

3 0

we have

$x^{2}-40=0$

Step 1

Adds $40$ to both sides of the equation

$x^{2}-40+40=0+40$

$x^{2}=40$

Step 2

Take the square root of both sides

$\sqrt{x^{2}}= \sqrt{40}$

$x=(+/-)\sqrt{40} \\x1=+\sqrt{40}=2\sqrt{10} \\ x2=-\sqrt{40}=-2\sqrt{10}$

therefore

<u>the answer is</u>

the first step in solving the quadratic equation is

Adds $40$ to both sides of the equation