Advertisements
Advertisements
प्रश्न
Use a formula to multiply of (4z – 5y)(4z + 5y)
बेरीज
उत्तर
We use the formula: (x - a)(x + a) = x2 - a2
(4z – 5y)(4z + 5y)
= (4z)2 - (5y)2
= 16z2 - 25y2
shaalaa.com
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
APPEARS IN
संबंधित प्रश्न
Using a2 − b2 = (a + b) (a − b), find (1.02)2 − (0.98)2
Expand `("x"+1/2)^2`
Use the formula to multiply the following.
(x + y) (x − y)
Use the formula to multiply the following.
(3x − 5) (3x + 5)
Use the formula to multiply the following.
(a + 6) (a − 6)
Expand: `("y" - 3/"y")^2`
Factors of 9x2 + 6xy are
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
`x^2/4 + 2x + 4`
If a2 + b2 = 74 and ab = 35, then find a + b.
Factorise `x^2 + 1/x^2 + 2 - 3x - 3/x`.
