Question

d) 25s2 + 30s +9 Solve using indentities​

Answer 1

Answer:

(i) (a + b)2 = a2 + 2ab +b2,

(ii) (a - b)2 = a2 - 2ab + b2 and

(iii) a2 – b2 = (a + b)(a – b).

Step-by-step explanation:

Answer 2

Step-by-step explanation:

${25s}^{2} + 30s + 9 \\ = {(5s)}^{2} + 2 \times 5s \times 3 + {3}^{2} \\ = {(5s + 3)}^{2} \\ \\ or \\ \\ 25 {s}^{2} + 30s + 9 \\ = 25 {s}^{2} + 15s + 15s + 9 \\ = 5s(5s + 3) + 3(5s + 3) \\ = (5s + 3)(5s + 3)$

hope you get your answer