Question

(3a+2b-c)² is equal (9a²+4b²+c³) ______ -4bc-6ac​

Answer 1

Answer:

6ab

Step-by-step explanation:

(9a²+4b²+c³) +6ab-4bc-6ac

Answer 2

EVALUTION★

$= (3a + 2b - c) {}^{2}$

we know that

$= > (a + b + c) {}^{2} \ = a {}^{2} + b {}^{2} + c {}^{2} + \\ 2ab + 2bc + 2ca ..(1$

comparisen

$(3a + 2b - c) {}^{2}$

of EQ (1

• to a=(3a)

• b=(2b)

• c=(-c)

to solve

$= > (3a + 2b - c) {}^{2} \\ = (3a) {}^{2} + (2b) {}^{2} + ( - c) {}^{2} \\ + 2(3a)(2b) + 2(2b)( - c) + 2( - c)(3a) \\ \\ = 9a {}^{2} + 4b {}^{2} + c {}^{2} + 12ab - 4bc - 6ac$

your answer empty place★

• 12ab ✅

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I hope it helps