Question

HELP ASAP PLEASEE!! Simplify the sum or difference: 4√2-7√

a.) -√6
b.) -3√2
c.) -11√2
d.) 11√2
simplify the sum or difference: 3√7- √63
a.) -2√7
b.) -6√7
c.) -4√3
d.) 0

Answer 1

`4√(2) - 7 √(2) = - 3 √(2)`
First question answer is B.

`3 √(7) - √(63) = √(63) - √(63) = 0`
Second question answer is D.

3^2 = 9, 7 x 9 =63
**In case you're wondering why 3 square root 7 equals to square root 63.

Hope this helps.

Answer 2

1. Option b is correct,
`-3√(2)`

2. option d is correct; 0

Explanation:

1. Simplify the sum or difference:

`4√(2) - 7√(2)`

then, the result we get;

`-3√(2)`

Therefore, the difference of
`4√(2) - 7√(2)` is,
`-3√(2)`

2.

Simplify the sum or difference:

`3√(7) - √(63)`

We can write
`√(63)` as:

`√(63) = √(9 \cdot 7) = √(3^2 \cdot 7) =3√(7)`

then;

`3√(7) -√(63) = 3√(7)-3√(7) = 0`

Therefore, the difference of
`3√(7) - √(63)` is, 0