Can someone please help me solve this?
Thanks.
√[2√63 + 2/(8+3√7)] =
A. 8 + 3√7
B. 4 + 3√7
C. 8
D. 4
E. √7
OA D
Roots
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√[2√63 + 2/(8+3√7)]
= √[6√7 + 2/(8+3√7)]
= √2[3√7 + 1/(8+3√7)]
= √2[(24√7+63 + 1)/(8+3√7)]
=√2[(24√7+64)/(8+3√7)]
=√16[(3√7+8)/(8+3√7)]
= 4
= √[6√7 + 2/(8+3√7)]
= √2[3√7 + 1/(8+3√7)]
= √2[(24√7+63 + 1)/(8+3√7)]
=√2[(24√7+64)/(8+3√7)]
=√16[(3√7+8)/(8+3√7)]
= 4
SACX