Rezcaviz
Answered

solve the following equations by extracting square roots

1.) xsquared=16
2.) tsquared=81
3.) rsquared-100+0
4.) xsquared-144=0
5.) 2s squared=50
6.) 4xsquared-225=0
7.) 3hsquared-147=0
8.) (x-4)squared=169
9.) (k+7)squared=289
10.) (2s-1)squared=225

guyz please help me the answer :)

Sagot :

1. x squared= 16
      x= square root of 16
      x= =plusminus4
2. t squared=81
    t=square root of 81
    t=plusminus9
3.r squared-100=0
   r squared=100
   r = square root of 100
   r=plusminus10
4. x squared- 144=0
    x squared=144
     x=square root of 144
     x=plusminus12
5. 2s squared=50
    2s squared=50 over 2 ;then cancel 2
      s squared=25
      s= square root of 25
      s=plusminus5
6.4x squared-225=0
   4x squared=225
   4x squared=225 over 4; then cancel 4  
     x=square root of 56.25
    x=plusminus7.5
7. 3h squared-147=0
    3h aquared=147
    3h squared=147 over 3; then cancel 3
      h=square root of 49 
      h=plusminus 7
I can only give you these 7 answers because im not really sure of my answer in number 8,9 and 10.
x=4
t=9
r=10
x=12
s=5
x=3.75
h=4.4
x=17
k=10
s=8