Question

factorise a square + 3 a - 88​

Answer 1

Answer:

Factorisation form of a² + 3a - 88 is (a + 11)(a - 8).

Step-by-step explanation:

We have to Factorise a² + 3a - 88

• Expression : a² + 3a - 88

Solving by Splitting Method:

• a² + 3a - 88

= a² + 11a - 8a - 88

= a(a + 11) -8(a + 11)

= (a + 11)(a - 8)

• Therefore, Factorisation form of a² + 3a - 88 is (a + 11)(a - 8).

Answer 2

$\huge\bigstar\underline\mathfrak\pink{Answer}$

The required factors are : ( a +11 )( a - 8 )

___________________

$\huge\bigstar\underline\mathfrak\pink{Explanation}$

a² + 3a - 88

Here, sum = 3

product = -88

By splitting middle term method,

= a² + 11a - 8a - 88 [ 3a = 11a - 8a ]

= a ( a + 11 ) - 8 ( a + 11 )

= ( a + 11 )( a - 8 )

________________[ Factorised ]