Expand: (3x + 7y)(3x - 7y) | vedclass

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Question

(A) The given expression is in the form of the algebraic identity $(a + b)(a - b) = a^2 - b^2$.Here,$a = 3x$ and $b = 7y$.Applying the identity:$(3x +

Vedclass · Accepted Answer

$9x^2 - 49y^2$

Vedclass · Answer

(A) The given expression is in the form of the algebraic identity $(a + b)(a - b) = a^2 - b^2$.Here,$a = 3x$ and $b = 7y$.Applying the identity:$(3x + 7y)(3x - 7y) = (3x)^2 - (7y)^2$$= 9x^2 - 49y^2$

Expand: $(3x + 7y)(3x - 7y)$

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