Advertisements
Advertisements
प्रश्न
Use the direct method to evaluate :
(4+5x) (4−5x)
बेरीज
उत्तर
Note: (a+b) (a−b) = a2 − b2
(4+5x) (4−5x)
= (4)2 − (5x)2
= 16 − 25x2
shaalaa.com
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
APPEARS IN
संबंधित प्रश्न
Simplify the following products:
`(x^3 - 3x^2 - x)(x^2 - 3x + 1)`
Simplify the expression:
`(x + y + z)^2 + (x + y/2 + 2/3)^2 - (x/2 + y/3 + z/4)^2`
Evaluate of the following:
(103)3
If \[x + \frac{1}{x} = 3\] then find the value of \[x^6 + \frac{1}{x^6}\].
If a + b = 7 and ab = 10; find a - b.
Evaluate: (6 − 5xy) (6 + 5xy)
Evaluate: 203 × 197
If `"r" - (1)/"r" = 4`; find: `"r"^2 + (1)/"r"^2`
If `x + (1)/x = "p", x - (1)/x = "q"`; find the relation between p and q.
If `x/y + y/x = -1 (x, y ≠ 0)`, the value of x3 – y3 is ______.
