Question

factorise through identities a square+8a+15

Answer 1

Answer:

$(a + 5)(a + 3)$

Step-by-step explanation:

${a}^{2} + 8a + 15 = {a}^{2} + 5a + 3a + 15 \\ = a(a + 5) + 3(a + 5) \\ = (a + 5)(a + 3)$