Question

answer it's urgent maths 9​

Answer 1

Step-by-step explanation:

3(4√5+√3)+2(4√5-√3)/(4√5-√3)(4√5+√3)

12√5+3√3+8√5-2√3/80-3

20√5+√3/77

Answer 2

Step-by-step explanation:

3/(4√5-√3) + 2/(4√5+√3)

( first rationalise both the numbers )

3/(4√5-√3) × (4√5+√3)/(4√5+√3)

= [3(4√5+√3)]/[(4√5-√3)(4√5+√3)]

= (12√5+3√3)/[(4√5)²-(√3)²]

= (12√5+3√3)/(80 - 3)

= (12√5+3√3)/(77)

2/(4√5+√3) × (4√5-√3)/(4√5-√3)

= [2(4√5-√3)]/[(4√5+√3)(4√5-√3)

= (8√5-2√3)/[(4√5)²-(√3)²]

= (8√5-2√3)/(80 - 3)

= (8√5-2√3)/(77)

(12√5+3√3)/(77) + (8√5-2√3)/(77)

= (12√5+3√3 + 8√5-2√3)/77

= (20√5+1√3)/77

= (20√5+√3)/77