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Standard VI
Mathematics
Estimating Sum or Difference
Question
If
a
=
2
and
b
=
3
, find the value of
5
a
2
−
2
a
b
.
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Solution
Verified by Toppr
5*(2*2)-2*2*3
20-12
8
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Similar Questions
Q1
If
a
=
2
and
b
=
3
, find the value of
5
a
2
−
2
a
b
.
View Solution
Q2
If
a
=
2
and
b
=
3
, find the value of
(i)
2
a
−
3
b
(ii)
5
a
2
−
2
a
b
(iii)
a
3
−
b
3
View Solution
Q3
If a = 2 and b = 3, find the value of
(i) a + b
(ii) a
2
+ ab
(ii) ab − a
2
(iv) 2a − 3b
(v) 5a
2
− 2ab
(vi) a
3
− b
3
View Solution
Q4
If
a
=
2
,
b
=
3
and
c
=
−
2
find the value of
a
2
+
b
2
+
c
2
−
2
a
b
+
3
a
b
c
.
View Solution
Q5
Find the value of the polynomial
a
3
+
3
a
2
b
+
2
a
b
−
b
2
at
a
=
−
2
and
b
=
3
. [2 MARKS]
View Solution