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Question

Write the degree of each of the following polynomials.
(i) 2x2 + 5x2 − 7
(ii) 5x2 − 3x + 2
(iii) 2x + x2 − 8
(iv) 12y7-12y6+48y5-10
(v) 3x3 + 1
(vi) 5
(vii) 20x3 + 12x2y2 − 10y2 + 20

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Solution

(i) Correction : It is 2x3+5x2-7 instead of 2x2+5x2-7. The degree of the polymonial 2x3+5x2-7 is 3.(ii) The degree of the polymonial 5x2-35x+2 is 2.(iii) The degree of the polymonial 2x+x2-8 is 2.(iv) The degree of the polymonial 12y7-12y6+48y5-10 is 7.(v) The degree of the polymonial 3x3+1 is 3.(vi) 5 is a constant polynomial and its degree is 0.(vii) The degree of the polymonial 20x3+12x2y2-10y2+20 is 4.

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