Question

Solve using suitabl identities (x+3)(x-7)
(a-5)(a-11)

Answer 1

Answer:

✨ Answer ✨

$(x + 3)(x - 7) \\ \\ = {x}^{2} - 7x + 3x - 21 \\ \\ {x}^{2} - 4x - 21 \\ \\ (a - 5)(a - 11) \\ \\ {a}^{2} - 11a - 5a + 55 \\ \\ {a}^{2} - 16a + 55$

Answer 2

✴$\huge{\tt{\red{Solution}}}}$✴

$(x + 3)(x - 7) \\ \\ = {x}^{2} - 7x + 3x - 21 \\ \\ = {x}^{2} - 4x + 21$

$(a - 5)(a - 11) \\ \\ = {a}^{2} - 11 a - 5a + 55 \\ \\ = {a}^{2} - 16 a + 55$

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