Question

expand the following using suitable identities (7x+5)²
(0.9p-0.5q)²​

Answer 1

Answer:

(i) (7x+5)^2=49x^2+70x+25

(ii) (0.9p-0.5q)^2=0.81p^2-0.9pq+0.25q^2

Step-by-step explanation:

(i) (7x+5)^2=(7x)^2+2(7x)(5)+(5)^2

=49x^2+70x+25

Answer 2

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