Advertisements
Advertisements
प्रश्न
Simplify the following using the formula: (a − b)(a + b) = a2 − b2: (82)2 − (18)2
उत्तर
Here, we will use the identity \[(a - b)(a + b) = a^2 - b^2\]
Let us consider the following expression:
\[\left( 82 \right)^2 - \left( 18 \right)^2 \]
\[ = \left( 82 + 18 \right)\left( 82 - 18 \right)\]
\[ = 100 \times 64\]
\[ = 6400\]
APPEARS IN
संबंधित प्रश्न
Simplify the following using the formula: (a − b)(a + b) = a2 − b2: 9.8 × 10.2
Find the following product: (x + 4) (x + 7)
Find the following product: (x + 7) (x − 5)
Expand the following:
(2x + 3y + 4z)2
Evaluate the following by using identities:
10013
If 2x – 3y – 4z = 0, then find 8x3 – 27y3 – 64z3
Simplify:
(1.5p + 1.2q)2 – (1.5p – 1.2q)2
Simplify:
(s2t + tq2)2 – (2stq)2
Expand the following, using suitable identities.
(x2y – xy2)2
Using suitable identities, evaluate the following.
105 × 95
