Advertisements
Advertisements
Question
Simplify: 5 x (2x + 3y) – 2x (x – 9y)
Advertisements
Solution
5 x (2x + 3y) – 2x (x – 9y)
= 10x2 + 15xy – 2x2 + 18xy
= 10x2 – 2x2 + 15xy+ 18xy
= 8x2 + 33xy
APPEARS IN
RELATED QUESTIONS
Identify the term, their coefficients for the following expression:
\[\frac{a}{2} + \frac{b}{2} - ab\]
For the following monomials, write its degree: – x2y
Write the degree of the following polynomial: – 8mn6+ 5m3n
Write numerical co-efficient of the following: y
Find the sum of: 9x2 – 6x + 7, 5 – 4x and 6 – 3x2
Find the sum of:
9ax – 6bx + 8, 4ax + 8bx – 7 and – 6ax – 4bx – 3
The sides of a triangle are 2x + 3y, x + 5y and 7x – 2y, find its perimeter.
Simplify: 5b – {6a + (8 – b – a)}
Write the greatest common factor in the following terms.
2xy, –y2, 2x2y
Identify term which contain x and give the coefficient of x.
13y2 − 8yx
