Question

Simplify the following
1.(root 5+root 2)(root5-root 2)
2.(2root5-3root3)(2root5+3root3)
3.(root3+root2)square root 2
4.(2root3+3root2) square root 2



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Answer 1

Answer:

1) (√5+√2) (√5-√2) =(√5)^2 - (√2)^2

=5-2

=3. by using formula

(a)^2-(b)^2=(a+b)(a-b)

2)(2√3+3√2)(2√3-3√2) =(2√3)^2 - (3√2)^2

=(4×3) - (9×2)

=12-18

=-6.

Do these question like that