Answer:

1.m=9

2.n=7

3.p=0

4.r=-12

5.s=5

Answer:

1. m = 9

2. n = 7

3. p = 0

4. r = (√-144) or 12i

5. s = 5

6. y = 7

Step-by-step explanation:

1. m²=81

square both sides

√m²=√81

2. n²-49=0

transpose 49 to the right side

n²=49

square both sides

√n²=√49

3. p²-16= 0

transpose 16 to the right side

p²=16

square both sides

√p²=√16

4. r²+144=0

transpose 144 to the right side

r²=-144

square both sides

√r²=√-144

because you can't extract the root of negative numbers, you can let it be or get the root as a positive then multiply by imaginary number (i)

5. 2s²=50

divide 2 by both sides

s²=25

then square both sides

6. (y+2)²-25=0

transpose 25 to the right side

then square both side

and transfer 2 to the right side