Question

${(3x + 4y)}^{3}$
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Answer 1

Answer:

hi...here the answer

Step-by-step explanation:

$given$

$(3x + 4y)^{3}$

$the formula \: is$

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

$(3x + 4y)^{3} = (3x) ^{3} - 3(3x)^{2} (4y) + 3(3x)(4y)^{2} - (4y)^{3}$

$= 27x ^{3} - 108x ^{2} y + 144xy^{2} - 64y^{3}$