Question

(5√7 - √64+√14)*√7 помогите плиииз ребят((

Answer 1

$(5\sqrt{7}-\sqrt{64}+\sqrt{14})*\sqrt{7}=5\sqrt{7*7}-\sqrt{64*7}+\sqrt{2*7*7}=\\=5*7-8\sqrt{7}+7\sqrt{2}=35-8\sqrt{7}+7\sqrt{2}$

Answer 2

5√7*√7-8√7+√14*7=35-8√7+√98=35-8√7+7√2

Answer 3

Let's simplify this expression step by step.

First, we need to simplify the square root terms inside the parentheses:

√64 = 8 (since the square root of 64 is 8) √14 cannot be simplified further, so we leave it as is.

Substituting these values, the expression becomes:

(5√7 - 8 + √14) * √7

Next, we can distribute the √7 term to each term inside the parentheses:

5√7 * √7 - 8 * √7 + √14 * √7

Simplifying each term separately:

5√(7 * 7) - 8√7 + √(14 * 7)

= 35 - 8√7 + √98

Finally, we can simplify the square root of 98:

√98 = √(49 * 2) = 7√2

Substituting this value, the final simplified expression becomes:

35 - 8√7 + 7√2

Therefore, (5√7 - √64+√14)*√7 simplifies to 35 - 8√7 + 7√2.