Simplify ((sqrt{0.7} + sqrt{70})^{2})
-
A.
84.7 -
B.
70.7 -
C.
217.7 -
D.
168.7
Correct Answer: Option A
Explanation
((sqrt{0.7} + sqrt{70})^{2})
= ((sqrt{0.7} + sqrt{70})(sqrt{0.7} + sqrt{70}))
= (0.7 + 2sqrt{0.7 times 70} + 70)
= (0.7 + 14 + 70 )
= 84.7