Advertisements
Advertisements
प्रश्न
Simplify:
(1.5p + 1.2q)2 – (1.5p – 1.2q)2
Advertisements
उत्तर
We have,
(1.5p + 1.2q)2 – (1.5p – 1.2q)2 = [(1.5p + 1.2q) + (1.5p – 1.2q)][(1.5p + 1.2q) – (1.5p – 1.2q)] ...[Using the identity, a2 – b2 = (a + b)(a – b)]
= [(1.5p + 1.5p) + (1.2q – 1.2q)][(1.5p – 1.5p) + (1.2q + 1.2q)]
= 3p × 2.4q
= 7.2pq
APPEARS IN
संबंधित प्रश्न
Simplify the following using the formula: (a − b)(a + b) = a2 − b2: 1.8 × 2.2
Find the following product: \[\left( x + \frac{4}{3} \right)\left( x + \frac{3}{4} \right)\]
Find the following product: (3x − 4y) (2x − 4y)
Expand the following:
(3a + 1) (3a – 2) (3a + 4)
Evaluate the following by using identities:
10013
2p is the factor of 8pq
Simplify:
(x2 – 4) + (x2 + 4) + 16
Expand the following, using suitable identities.
(0.9p – 0.5q)2
Carry out the following division:
76x3yz3 ÷ 19x2y2
Carry out the following division:
17ab2c3 ÷ (–abc2)
