Q1 of 59 Page 30

Classify into like terms:

4x2, x, –8x3, xy, 6x3, 4y, –74x3, 8xy, 7xyz, 3x2.

The terms having same variable with same exponents are called like terms

Here like terms are


(4x2,3x2) with same variable x and exponential power as 2


( has no like term with x as variable and exponential power as 1)


(–8x3, 6x3, –74x3 with variable as x and exponential power as 3 )


7xyz has no like term as no other term has three variables x, y, z


(xy, 8xy has same variables x, y and exponential power of both x and y as 1)


More from this chapter

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1

Separate the constants and variables from the following:

and

2

Separate the monomials, binomials and trinomials from the following:

7xyz, 9 – 4y, 4y2 – xz, x – 2y + 3z, 7x + z2, 8xy, x2y2, 4 + 5y – 6z.

 2

Simplify:

(i) 7x – 9y + 3 – 3x – 5y + 8;


(ii) 3x2 + 5xy – 4y2 + x2 – 8xy – 5y2.

 3

Add:

(i) 5a + 3b, a – 2b and 3a + 5b;


(ii) x3 – x2y + 5xy2 + y, –x3 – 9xy2 + y, and 3x2y + 9xy2.