Advertisements
Advertisements
प्रश्न
Multiply: (2x - 3y)(2x + 3y)
Advertisements
उत्तर
(2x - 3y)(2x + 3y)
⇒ 2x (2x + 3y) - 3y(2x + 3y)
⇒ 2x × 2x + 2x × 3y - 3y × 2x - 3y × 3y
⇒ 4x2 + 6xy - 6xy - 9y2
⇒ 4x2 + 0 - 9y2
⇒ 4x2 - 9y2
APPEARS IN
संबंधित प्रश्न
Factorize `21x^2 - 2x + 1/21`
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 : x2 − 1 − 2a − a2
Separate the constants and variables from the following :
`-7,7+"x",7"x"+"yz",sqrt5,sqrt("xy"),(3"yz")/8,4.5"y"-3"x",`
8 −5, 8 − 5x, 8x −5y × p and 3y2z ÷ 4x
Multiply: (x - a)(x + 3b)
Find the average (A) of four quantities p, q, r and s. If A = 6, p = 3, q = 5 and r = 7; find the value of s.
Write the coefficient of x2 and x in the following polynomials
`x^2 - 7/2 x + 8`
Which of the following is correct?
