Advertisements
Advertisements
प्रश्न
Factorize `21x^2 - 2x + 1/21`
Advertisements
उत्तर
`= (sqrt21x)^2 - 2 xx sqrt21x xx 1/sqrt21 + (1/sqrt21)^2`
Using idnetity `a^2 - 2ab + b^2 = (a - b)^2`
`= (sqrt21x - 1/sqrt21)^2`
`∴ 21x^2 - 2x + 1/21 = (sqrt21x - 1/sqrt21)^2`
APPEARS IN
संबंधित प्रश्न
What are the possible expressions for the dimensions of the cuboid whose volume is 3x2 - 12x.
Factorize the following expressions:
`x^3/216 - 8y^3`
Factorize the following expressions:
(a - 2b)3 - 512b3
Factorize the following expressions:
(a + b)3 – 8(a – b)3
Factorize the following expressions:
a3 + 3a2b + 3ab2 + b3 - 8
Write the value of 253 − 753 + 503.
Divide: x3 − 6x2 + 11x − 6 by x2 − 4x + 3
Express the following as an algebraic expression:
The subtraction of 5m from 3n and then adding 9p to it.
If x = 2 and y = 3, then find the value of the following expressions
x + y
Shashi used addition to solve a word problem about the weekly cost of commuting by toll tax for ₹ 15 each day. Ravi solved the same problem by multiplying. They both got the correct answer. How is this possible?
