Question

Solve the following quadratic equations by extracting square roots


1. X²=16
2. T²=81
3. R²-100=0
4. X²-144=0
5. 2s²=50

Answer 1

1.)x²=16
that means x*x=16
x=√16= +ve 4 or -ve 4
(4*4=16, -4*-4=16)

2.)t²=81
t*t=81
t=√81= +ve 9 or -ve 9

3.)R²-100=0
R²=100
R=√100= +ve 10 or -ve 10

4.)X²-144=0
X²=144
x=√144= +ve 12 or -ve 12

5.)2S²=50
S²=50÷2=25
S²=25.
S=+ve 5 or -ve 5

Answer 2

1. X²=16

X=±4

2. T²=81

T=±9

3. R²-100=0

R²=100

R =±10

4. X²-144=0

X² =144

X=12

5. 2s² =50

s²=25

s =±5

Please mark as the brainliest answer