Advertisements
Advertisements
प्रश्न
Expand the following:
(x - 5) (x - 4)
योग
Advertisements
उत्तर
(x - 5) (x - 4)
= x2 -5x - 4x + 20
= x2 - 9x + 20
(Using identify : (x - a) (x - b)
= x2 - (a + b) x + ab).
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
APPEARS IN
संबंधित प्रश्न
Expand the following, using suitable identity:
(x + 2y + 4z)2
Factorise the following:
64a3 – 27b3 – 144a2b + 108ab2
Simplify the following products:
`(m + n/7)^3 (m - n/7)`
Write the expanded form:
`(-3x + y + z)^2`
If x = 3 and y = − 1, find the values of the following using in identify:
(9y2 − 4x2) (81y4 +36x2y2 + 16x4)
The product (x2−1) (x4 + x2 + 1) is equal to
Evaluate: (9 − y) (7 + y)
The coefficient of x in the expansion of (x + 3)3 is ______.
Factorise the following:
25x2 + 16y2 + 4z2 – 40xy + 16yz – 20xz
Simplify (2x – 5y)3 – (2x + 5y)3.
