Question

5. Factorise the expression
a² + 5a - 36​

Answer 1

Answer:

{a}^2 + {5a} - {36}a

2

+5a−36

= {a}^2 + {(9-4)}a - {36}a

2

+(9−4)a−36

= {a}^2 + {9a} - {4a} - {36}a

2

+9a−4a−36

= {a} ( a + 9 ) - {4} ( a + 9 )a(a+9)−4(a+9)

= {(a - 4)} {(a + 9)}(a−4)(a+9) ✔

Step-by-step explanation:

hope it helps