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Subtract 6x2 – 5y2 + 7y – 4 from 82 – 5xy + 9y2 + 6x - 4y
We know that subtraction of a number is the same as addition of its additive inverse. We have
8x2 -5xy + 9y2+6x - 4y
6x2 - 5y2 + 7y - 4
(-) (+) (-) (+)
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2x2 -5xy + 14y2+6x -11y + 4
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
Add the following:
a - b + ab, b - c + bc, c -a +ac
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