Question

simplify (a square-5) (a+5) +15​

Answer 1

Answer:

${a}^{3} + 5a {}^{2} - 5a - 10$

Step-by-step explanation:

$(a {}^ {2} - 5)(a + 5) + 15$

$a {}^{2}(a + 5) - 5(a + 5) + 15$

$a {}^{3} + 5 {a }^{2} - 5a - 25 + 15$

${a}^{3} + 5a {}^{2} - 5a - 10$