Question

Simplify the following
1. 4√18-5√8
2.4√3(2√3-√12)
3.6√3(√12+√27)

Answer 1

Answer:

Step-by-step explanation:

Step-by-step explanation:

Given (7√3-5√2) (√48+√18)

= (7√3-5√2) (√4×4×3+√3×3×2)

=(7√3-5√2) (4√3+3√2)

/* Multiply numerator and denominator by (4√3-3√2), we get

_(7√3-5√2)(4√3-3√2) (4√3+3√2)(4√3-3√/2)

-28×3-21√6-20√6+15x2 (4√3)²-(3√2)²

-84-41√6+30 48-18

= 114-41√/6 30

/* Denominator rationalised.

Therefore,

(7√3-5√2) (√48 + √18) 114-41√6

30