Question

a^2 - 4b^2 + 9c^2 - 4ab - 12bc + 6ca evaluate​

Answer 1

Answer:

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Step-by-step explanation:

a2+4b2+9c2−4ab−12bc+6ca

Use the perfect square formula, p2+q2+r2+2pq+2pr+2qr=(p+q+r)2, where p=a, q=−2b and r=3c.

(a−2b+3c)2