Advertisements
Advertisements
प्रश्न
Expand the following:
(a + 4) (a + 7)
योग
Advertisements
उत्तर
(a + 4) (a + 7)
= a2 + 4a + 7a + 28
= a2 + 11a + 28
(Using identity : (x + a) (x + b)
= x2 + (a + b) x + ab).
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
APPEARS IN
संबंधित प्रश्न
Evaluate the following product without multiplying directly:
95 × 96
Verify:
x3 + y3 = (x + y) (x2 – xy + y2)
Evaluate following using identities:
991 ☓ 1009
Simplify the following:
0.76 x 0.76 - 2 x 0.76 x 0.24 x 0.24 + 0.24
Write in the expanded form:
`(a + 2b + c)^2`
If \[x^2 + \frac{1}{x^2} = 98\] ,find the value of \[x^3 + \frac{1}{x^3}\]
Use the direct method to evaluate :
(3b−1) (3b+1)
Evaluate: `(2"a"+1/"2a")(2"a"-1/"2a")`
Evaluate the following without multiplying:
(103)2
If `x/y + y/x = -1 (x, y ≠ 0)`, the value of x3 – y3 is ______.
