Advertisements
Advertisements
प्रश्न
Factorise:
84 – 2r – 2r2
योग
Advertisements
उत्तर
84 – 2r – 2r2 = –2(r2 + r – 42)
= –2(r2 + 7r – 6r – 42)
= –2[r(r + 7) – 6(r + 7)]
= –2(r – 6)(r + 7)
= 2(6 – r)(r + 7)
shaalaa.com
Factorisation of Polynomials
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 2: Polynomials - Exercise 2.3 [पृष्ठ २१]
APPEARS IN
संबंधित प्रश्न
Factorise:
2x2 + 7x + 3
Factorise:
x3 + 13x2 + 32x + 20
Determine the following polynomial has (x + 1) a factor:
x4 + x3 + x2 + x + 1
Determine the following polynomial has (x + 1) a factor:
x4 + 3x3 + 3x2 + x + 1
Determine the following polynomial has (x + 1) a factor:
`x^3-x^2-(2+sqrt2)x+sqrt2`
Factorize the following polynomial.
(y + 2) (y – 3) (y + 8) (y + 3) + 56
Factorise:
x2 + 9x + 18
Factorise:
2x2 – 7x – 15
Factorise:
1 + 64x3
If both x – 2 and `x - 1/2` are factors of px2 + 5x + r, show that p = r.
