Expand each of the following expressions:
1) (c+6d)²
2) (c-3d)²
3) (4b+3) (4b-3)
KINDLY SOLVE WITH SOLUTION ONLY.
IRRELEVANT ANSWERS WILL BE REPORTED.
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Answer:
(i) c^2+36d^2+12cd
(ii)c^2+9d^2-6cd
Step-by-step explanation:
(i) (c+6d)^2
=c^2+(6d)^2+2*c*6d
[using (a+b) ^2=a^2+b^2+2ab]
=c^2+36d^2+12cd
(ii) (c-3d)^2
=c^2+(3d)^2-2*c*3d
=c^2+9d^2-6cd
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