1.

Expand(-2a-3b-4c)^2usingidentity.

Answer» ONG>Answer:

4a^2 + 9b^2 + 16c^2 + 12ab +16ac + 24bc

Step-by-step explanation:

Expand(-2a-3b-4c)^2 usingidentity

Solution:

(-2a-3b-4c)^2

= (-2a)^2 + (-3b)^2 + (4c)^2 + 2 * (-2)a * (-3)b + 2 * (-2)a * (-4)C + 2 * (-3)b * (-4)c

= 4a^2 + 9b^2 + 16c^2 + 12ab +16ac + 24bc



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