Advertisements
Advertisements
Question
Find the sum of: x2 + x – 2, 2x – 3x2 + 5 and 2x2 – 5x + 7
Advertisements
Solution
x2 + x – 2, 2x – 3x2 + 5 and 2x2 – 5x + 7
= x2 + x – 2 + 2x – 3x2 + 5 + 2x2 – 5x + 7
= x2 - 3x2 + 2x2 + x + 2x - 5x - 2 + 5 + 7
= 3x2 - 3x2 + 3x - 5x - 2 + 12
= 0 - 2x + 10
= - 2x + 10
APPEARS IN
RELATED QUESTIONS
Identify the term, their coefficients for the following expression:
7x2yz − 5xy
Write the degree of the following polynomial:
3x – 15
Subtract the second expression from the first:
−2b + 2c, b + 3c
Subtract the second expression from the first:
5a + b, - 6b + 2a
Simplify: 6a – (- 5a – 8b) + (3a + b)
Simplify: (x + y – z)x + (z + x – y)y – (x + y – z)z
The coefficient of leading term of the expression 3z2y + 2x – 3 is _________
Write the greatest common factor in the following terms.
21pqr, –7p2q2r2, 49p2qr
Write the greatest common factor in the following terms.
qrxy, pryz, rxyz
Factorise the following expression.
63p2q2r2s – 9pq2r2s2 + 15p2qr2s2 – 60p2q2rs2
