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Sum
Expand: (3x + 4y)(3x - 4y)
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Solution
(3x + 4y)(3x - 4y)
= (3x)2 - (4y)2
= 9x2 - 16y2
Concept: Expansion of (a + b)(a - b)
Is there an error in this question or solution?
Expand: (3x + 4y)(3x - 4y)
(3x + 4y)(3x - 4y)
= (3x)2 - (4y)2
= 9x2 - 16y2