Advertisements
Advertisements
Question
Factorised form of p2 – 17p – 38 is ______.
Options
(p – 19)(p + 2)
(p – 19)(p – 2)
(p + 19)(p + 2)
(p + 19)(p – 2)
Advertisements
Solution
Factorised form of p2 – 17p – 38 is (p – 19)(p + 2).
Explanation:
We have, p2 – 17p – 38
= p2 – 19p + 2p – 38 ...[By splitting the middle term, so that the product of their numerical coefficients is equal constant term]
= p(p – 19) + 2(p – 19)
= (p – 19)(p + 2) ...[∵ x2 + (a + b)x + ab = (x + a)(x + b)]
APPEARS IN
RELATED QUESTIONS
Identify the terms, their coefficients for the following expressions.
3 − pq + qr − rp
For the following monomials, write its degree: 3m3n4
In -5x3y2z4 ; write the coefficient of y2 Also, write the degree of the given algebraic expression.
Fill in the blank:
8x - 5x = ________
Find the sum of: x2 + x – 2, 2x – 3x2 + 5 and 2x2 – 5x + 7
Enclose the given term in bracket as required:
x2 – xy2 – 2xy – y2 = x2 – (……..)
Simplify: 6a – (- 5a – 8b) + (3a + b)
Find the numerical co-efficient of the following term:
2ab
(9x – 51) ÷ 9 is x – 51.
Write the greatest common factor in the following terms.
qrxy, pryz, rxyz
