Question

B. Sederhanakanlah
1.√175 - √28
2.√125+√80-√80
3.√11-5√11-3√11
4.√72+√108-√12
5.√72+√32-√18

C. Sederhanakanlah
1.(√3x√4)√2
2.√3x(√7x√2)
3.(2x√5)^2
4.(2-√2)(3+√2)
5.(√6-√2)^2

Answer 1

B
1). √175 - √28 = - = 5√7 - 2√7 = 3√7

2). √125 + √80 - √80 = √125 = = 5

3). √11 - 5√11 - 3√11 = -7√11

4). √72 + √108 - √12 = + - = 6 + 6 - 2 = 6 + 4

5). √72 + √32 - √18 = + - = 6 + 4 - 3 = 7

C.
1). (√3 x √4)√2 = = = = 2

2). √3 x (√7 x √2) = =

3). (2 x √5)^2 = = x = 4 x 5 = 20

4). (2 - √2) (3 + √2) = (2)(3) + 2 - 3 - (√2)(√2) = 6 - √2 - 2 = 4 - √2

5). (√6-√2)^2 = (√6 - √2) (√6 - √2) = (√6)(√6) - (√6)(√2) - (√6)(√2) + (√2)(√2) = 6 - 2 + 2 = 8 - 2 = 8 - (2)(2) = 8 -