Advertisements
Advertisements
प्रश्न
Expand the following, using suitable identities.
`((2a)/3 + b/3)((2a)/3 - b/3)`
उत्तर
We have,
`((2a)/3 + b/3)((2a)/3 - b/3) = ((2a)/3)^2 - (b/3)^2` ...[Using the identity, (a + b)(a – b) = a2 – b2]
= `4/9a^2 - 1/9b^2`
APPEARS IN
संबंधित प्रश्न
Show that `(4/3 m - 3/4 n)^2 + 2mn = 16/9 m^2 + 9/16 n^2`
Simplify the following using the formula: (a − b)(a + b) = a2 − b2: 9.8 × 10.2
Simplify the following using the identities: 1.73 × 1.73 − 0.27 × 0.27
Simplify the following using the identities: \[\frac{8 . 63 \times 8 . 63 - 1 . 37 \times 1 . 37}{0 . 726}\]
Find the following product: (x + 7) (x − 5)
Evaluate the following: 102 × 106
Evaluate the following: 53 × 55
If (x + y + z) = 9 and (xy + yz + zx) = 26, then find the value of x2 + y2 + z2
Expand the following, using suitable identities.
(x + 3)(x + 7)
Expand the following, using suitable identities.
(0.9p – 0.5q)2
