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solve the following quadratic equations by extracting the square roots.​

Solve The Following Quadratic Equations By Extracting The Square Roots class=

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Answer:

1. r² = 16

√r² = √16

r = 4

2. r²-100= 0

r²= 100

√r²= √100

r = 10

3. s² = 64

√s²= √64

s= 8

4.r²= 18

√ r² = √18

r = 9

5.x²-144= 0

x² = 144

√x² = √144

x = 12

6.x² = 50

√x² = √50

x = 5√2

7. t²-12 = 0

t² = 12

√t²= √12

t = 2√3

8.c²-32= 0

c²= 32

√c² = √32

c = 4√2

9.(k + 7)² = 81

√(k + 7)² = √81

k + 7 = 9

k = 9 - 7

k = 2

10.(x - 4)² = 169

√(x + 4)² = √169

x + 4 = 13

x= 13 - 4

x = 9

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