Advertisements
Advertisements
प्रश्न
Factorise the following:
y2 – 16y – 80
Advertisements
उत्तर
Product = – 80, sum = – 16
Split the middle term as – 20y and 4y
y2 – 16y – 80 = y2 – 20y + 4y – 80
= y(y – 20) + 4(y – 20)
= (y – 20)(y + 4)
APPEARS IN
संबंधित प्रश्न
Identify polynomials in the following:
`g(x)=2x^3-3x^2+sqrtx-1`
In each of the following, use factor theorem to find whether polynomial g(x) is a factor of polynomial f(x) or, not: (1−7)
f(x) = x3 − 6x2 + 11x − 6; g(x) = x − 3
For what value of a is (x − 5) a factor of x3 − 3x2 + ax − 10?
In the following two polynomials, find the value of a, if x − a is factor (x5 − a2x3 + 2x + a + 1).
What must be added to 3x3 + x2 − 22x + 9 so that the result is exactly divisible by 3x2 + 7x − 6?
If \[x = \frac{1}{2}\] is a zero of the polynomial f(x) = 8x3 + ax2 − 4x + 2, find the value of a.
If x − a is a factor of x3 −3x2a + 2a2x + b, then the value of b is
Factorise the following:
p² – 6p – 16
Factorise the following:
12x2 + 36x2y + 27y2x2
Factorise:
2x3 – 3x2 – 17x + 30
