Select a suitable identity and find the following products
(i) (3k + 4l) (3k + 4l)
(ii) (ax²+ by²) (ax² + by²)
(iii) (7d – 9e) (7d – 9e)
(iv) ( m² – n²) (m² + n²)
(v) (3t + 9s) (3t – 9s)
(vi) (kl – mn) (kl + mn)
(vii) (6x + 5) (6x + 6)
(viii) (2b – a) (2b + c)
Answers
Answered by
15
(i)(3k+41)(3k+41)
(3k+41)(3k+41)=(3k+41)^2
=(3k)^2+(41)^2+2×3k×41
=9k^2+1681+246k
=9k^2+246k+1681
Answered by
2
Step-by-step explanation:
( 3t+9s) (3t-9s) ( a+b) (a-b)=a²-b²
=(3t)²-(9s)²
=9t²-81s²
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