Expand: (2a - 3b + 4c)^ 2 using suitable identity.
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Answer:
4a² + 9b² + 16c² - 12ab + 16ac - 24bc
Step-by-step explanation:
(2a-3b+4c)²
= (2a)² + (-3b)² + (4c)² + 2(2a)(-3b) + (2)(2a)(4c) + 2(-3b)(4c)
= 4a² + 9b² + 16c² - 12ab + 16ac - 24bc
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