Linear Equation in Two Unknowns
1.Prudy spend $89 on buying some hamburgers and sundaes in a fast food shop.The numbers of hamburger and a sundae are $11 and $6 respectively,find the values of x and y.
Rational and Irrational Numbers
evaluate(can be expressed in surd form.Questions2-5)
2.(3√27)*(2√12)*(√5)
3.(4/√6)-(√6/3)
4.[(3√5)-(√3)][(2√3)+(4√5)]
5.[(√5)-(√2)][(√5)+(√2)]
6.If √2=1.414,without using a calculator,find the value of √32/8.(corr to 3 sig. fig.)
7.If a=√2 and b=√7,express the following in terms of a and b:
a.√14
b.(√28)-(√18)
8.If √3=a and √5=b,find (√45)-(√3/√25).(express in terms of a and b.)