Simplify: (√2+3p+3√2r)^2-(√2-3p-3√2r)^2
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2
Answer:
Answer
Correct option is
A
1
(
2
+3p+3
2r
)
2
−(
2
−3p−3
2r
)
2
Using a
2
−b
2
=(a−b)(a+b) we have
=(
2
+3p+3
2r
−
2
+3p+3
2r
)(
2
+3p+3
2r
+
2
−3p−3
2r
)
=(6p+6
2r
)(2
2
)
=12
2
(p+
2r
)
=12p
2
+24p
r
=12(
2
p+2
r
)
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