Advertisements
Advertisements
प्रश्न
Evaluate: `(4/7"a"+3/4"b")(4/7"a"-3/4"b")`
योग
Advertisements
उत्तर
`(4/7"a"+3/4"b")(4/7"a"-3/4"b")`
`=(4/7"a")^2-(3/4"b")^2` ......[ ∵ (a − b) (a + b) = a2b2]
`=16/49"a"^2-9/16"b"^2`
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
APPEARS IN
संबंधित प्रश्न
Evaluate following using identities:
991 ☓ 1009
Simplify the following products:
`(x/2 - 2/5)(2/5 - x/2) - x^2 + 2x`
Simplify the following products:
`(x^3 - 3x^2 - x)(x^2 - 3x + 1)`
If x + \[\frac{1}{x}\] = then find the value of \[x^2 + \frac{1}{x^2}\].
Find the square of 2a + b.
Use identities to evaluate : (97)2
Use the direct method to evaluate :
`("a"/2-"b"/3)("a"/2+"b"/3)`
Evaluate: (9 − y) (7 + y)
Evaluate the following without multiplying:
(95)2
If a + b + c = 9 and ab + bc + ca = 26, find a2 + b2 + c2.
