Q.Add 2√2+ 5√3 and √2 – 3√3.
Q.Simplify: (√3+√7) (√3-√7).
Q.Rationalise the denominator of 1/[7+3√3].
Q.Simplify:
(i)72/3.71/5
(ii)101/2/101/4
Answers
Answered by
2
Step-by-step explanation:
.
MATHS
Rationalize
7
+
3
−
2
1
December 26, 2019
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Sarah Sobti
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ANSWER
Multiply Numerator & Denominator by (
7
+
3
)+(
2
)
(
7
+
3
)
2
−(
2
)
2
(
7
+
3
)+
2
=
7+3+2
21
−2
7
+
3
+
2
=
8+2+
21
7
+
3
+
2
Multiply Numerator & Denominator by (8−2
21
)
=
64−84
(
7
+
3
+
2
)
(8−2
21
)
=
−20
(8
7
−2×7
3
+8
3
−2×3
7
+8)
2
−2
42
)
=
−20
(2
7
−6
3
+8
2
−2
42
)
=
20
6
3
−8
2
+2
42
−2
7
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