Question

1.Subtract (√7-√2) from ( √7+√2)
2. Find the sum of 2√3 , 3√3 , -4√3
Please answer this questions fast
With steps

Answer 1

Answer:

1. 2root 2

Step-by-step explanation:

root7 + root 2 - (root7 - root2)

=root7 + root 2 - root 7 + root 2 ( root 7 - root 7 = 0)

=root 2 + root 2

=2 root 2

2. 2root 3 + 3root 3 - 4root 3

= 5root 3 - 4root 3

= 1root 3

Answer 2

Answer:

1. 2.8284
2. √3

Step-by-step explanation:

$1. \: ( \sqrt{7} + \sqrt{2} ) - ( \sqrt{7} - \sqrt{2} ) \\ = \sqrt{7} + \sqrt{2} - \sqrt{7} + \sqrt{2} \\ = \sqrt{2} + \sqrt{2} \\ = 2.8284$$2. \: 2 \sqrt{3} + 3 \sqrt{3} + ( - 4 \sqrt{3}) \\ = 2 \sqrt{3} + 3 \sqrt{3} - 4 \sqrt{3} \\ = \sqrt{3}(2 + 3 - 4) \\ = \sqrt{3} \times 1 \\ = \sqrt{3}$