Question

Simplify:

3 square root of 5 end root minus 2 square root of 2 end root plus square root of 45 end root minus square root of 28

2 square root of 12

2 square root of 2

6 square root of 5 end root minus 4 square root of 7

6 square root of 10 end root minus 4 square root of 14

Answer 1

First off, you further simplify \[\sqrt {45} - \sqrt {28}\]

Answer 2

\[\large \sqrt{45} = \sqrt{9 \times 5 } = 3\sqrt{5} \]
\[\large - \sqrt{28} = -\sqrt{4 \times 7} = -2\sqrt{7}\]

Answer 3

Now just combine the terms with like terms

Answer 4

\[\huge 3\sqrt{5}+3\sqrt{5} - 2\sqrt{7} - 2\sqrt{7 } = ?\]

Answer 5

2(3rt5)-2(2rt7)?

Answer 6

No, think of the √5 as variables.
3x + 3x = 6x
In similarity 3√5 + 3√5 = 6√5
do the same for the other one

Answer 7

3x+3x-2y-2y