Question

please tell me guys fast

Answer 1

do multiplication or lcm

Answer 2

Q.1 Solve 2⅔, 2⅓

•••••> 2⅔ = 8/3

2⅓ = 7/3

Q.2 Simplify (√5-√2)(√5+√2)

•••••> by using formulae (a+b)(a-b) = a²-b²

(√5-√2)(√5+√2)

(√5)²- (√2)²

5 - 2

3

Q.3 Find 5 rational numbers between 1 and 2

•••••> by alternative method

any decimals between 1 and 2 ;

example: 1.1, 1.2, 1.3, 1.4, 1.5...

Q.4 rationalize the denominator 1/2+√3

•••••> by multiplying with conjugate =

(1/2+√3)(2-√3/2-√3)

1(2-√3)/(2-√3)(2+√3)

2-√3/(2)²-(√3)²

2-√3/4-3

2-√3/1

hence, denominator rationalized