(A-2b-3c)square. Factorise it.
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нere ιѕ υr anѕwer --
✅(a - 2b - 3c)^2
Put this in the formula of (a+b+c)^2..
= (a)^2 + (-2b)^2 + (-3c)^2 + 2*(a)*(-2b) + 2*(-2b)*(-3c) + 2*(-3c)*(a)
= a^2 + 4b^2 + 9c^2 - 4ab + 12bc - 6ac.
нope ιт нelpѕѕ....☺✌
нere ιѕ υr anѕwer --
✅(a - 2b - 3c)^2
Put this in the formula of (a+b+c)^2..
= (a)^2 + (-2b)^2 + (-3c)^2 + 2*(a)*(-2b) + 2*(-2b)*(-3c) + 2*(-3c)*(a)
= a^2 + 4b^2 + 9c^2 - 4ab + 12bc - 6ac.
нope ιт нelpѕѕ....☺✌
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