The sum of 3 expressions is 8 + 13x + 7x 2
. Two of them are 2x2
+ 3x + 2 and 3x 2
– 4x + 1.
Find the third expression.
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Answer:
Question 1:
Add the following:
(i) 3x and 7x
(ii) −5xy and 9xy
ANSWER:
We have
(i) 3x + 7x = (3 + 7)x = 10x
(ii) -5xy + 9xy = ( -5 + 9)xy = 4xy
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