Question

Solve by giving square roots:
1) -2v^2=28
2) -10x^2=90

Answer 1

(1) i sqrt14

Answer 2

could you explain the process, please?> I wish to learn

Answer 3

(1) -2v^2=28 --- given
v^2=-14 --- multiplicative inverse property
v =sqrt -14 --- square root property
v = sqrt(14)(-1) given that sqrt of -1 is i (imaginary number)
v = i sqrt 14 ; since 14 has no perfect square factor

Answer 4

and the second one,? Very well explained thank you btw

Answer 5

(2) -10x^2=90
x^2=-9 (multiplicative inverse property)
x =sqrt(9)(-1) (factor the radicand)
;9 is perfect square
x = +-3i

Answer 6

Great thanks !

Answer 7

glad to help. .