Question

(✓28-✓7)умножаем на✓7

Answer 1

28*7=196. √196=14. 14-7=7

Answer 2

$(\sqrt{2^2*7}-\sqrt{7}) *\sqrt{7}$

$(2\sqrt{7} -\sqrt{7} )*\sqrt{7}$

$\sqrt{7}*\sqrt{7}$

$\sqrt{7*7}$

$\sqrt{7^2}$

$7$

Answer 3

To simplify the expression (✓28-✓7) multiplied by ✓7, first, let's find the square roots of 28 and 7:

✓28 ≈ 5.29 (rounded to two decimal places) ✓7 ≈ 2.65 (rounded to two decimal places)

Now, the expression becomes:

(5.29 - 2.65) * 2.65

Subtracting the square roots:

(2.64) * 2.65

Finally, multiply the result:

2.64 * 2.65 ≈ 6.996 (rounded to three decimal places)

So, (✓28-✓7) multiplied by ✓7 is approximately 6.996.