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:
`q(x)=2x^2-3x+4/x+2`
Identify constant, linear, quadratic and cubic polynomials from the following polynomials:
`g(x)=2x^3-7x+4`
If x = 0 and x = −1 are the roots of the polynomial f(x) =2x3 − 3x2 + ax + b, find the value of a and b.
If x − 2 is a factor of the following two polynomials, find the values of a in each case x3 − 2ax2 + ax − 1.
Find the values of a and b so that (x + 1) and (x − 1) are factors of x4 + ax3 − 3x2 + 2x + b.
What must be subtracted from x3 − 6x2 − 15x + 80 so that the result is exactly divisible by x2 + x − 12?
x3 + 2x2 − x − 2
Factorise the following:
5x2 – 29xy – 42y2
Factorise the following:
12x2 + 36x2y + 27y2x2
Factorise:
2x3 – 3x2 – 17x + 30
