Question

Help me please)4√5-√245+√70=?​

Answer 1

Ответ:

√70-3√5

Объяснение:

4√5-√(49*5)+√70 = 4√5-7√5+√70 =

√70-3√5

Answer 2

Sure, I can help you simplify the expression:

4√5 - √245 + √70

Let's break it down step by step:

1. Simplify the square roots inside each term:

4√5 = 4√(5) √245 = √(5 * 49) = 7√5 √70 = √(10 * 7) = √10 * √7 = √(2 * 5) * √7 = √2 * √5 * √7 = √2√5√7

Now the expression looks like this:

4√5 - 7√5 + √2√5√7

2. Combine like terms:

4√5 - 7√5 + √2√5√7 = (4 - 7)√5 + √2√5√7

3. Perform the subtraction:

(4 - 7)√5 = (-3)√5

So, the simplified expression is:

-3√5 + √2√5√7

You can't simplify it further, so the final expression is:

-3√5 + √2√5√7