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Subtract 4a - 7ab + 3b + 12 from 12a - 9ab + 5b - 3
For subtraction we rearrange the terms such that the like terms are in the same column. Then we change the sign of the terms to be subtracted. Next we add the terms.
12a - 9ab + 5b - 3
4a - 7ab + 3b + 12
(-) (+) (-) (-)
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8a - 2ab + 2b - 15
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Construct:
(a) 3 binomials with only x as a variable;
(b) 3 binomials with x and y as variables;
(c) 3 monomials with x and y as variables;
(d) 2 polynomials with 4 or more terms.
write two terms which are like
(i) 7xy (ii) 4mn2 (iii) 21.
Identify the terms, their coefficients for each of the following expressions.
1 + x + x2
3 - pq + pr - rp
03.a - 0.6ab + 0.5b
Classify the following polynomials as monomials, binomials, trinomials. Which polynomials do not fit in any of these three categories?
x + y, 1000, x + x2+x3+x4, 7 + y +5x, 2y - 3y2+4y2 , 4z -15x2 , ab +bc + cd +da, p2q + pq2 , 2p + 2q.
Add the following:
ab - bc, bc - ca, ca - ab
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