Question

(√98-5√2)•√2=?(• - умножение)​

Answer 1

($\sqrt{98}$-5$\sqrt{2}$)*$\sqrt{2}$=(7$\sqrt{2}$-5$\sqrt{2}$)*$\sqrt{2}$ = 2$\sqrt{2}$*$\sqrt{2}$= 4

Answer 2

To solve this expression, first, let's simplify the terms inside the parentheses:

√98 - 5√2

√98 can be simplified because 98 can be factored as 2 * 49, and the square root of 49 is 7. So, √98 = 7√2.

Now, the expression inside the parentheses becomes:

7√2 - 5√2

Simplifying this, we get:

2√2

Now, you want to multiply this expression by √2:

2√2 * √2

When you multiply a square root by itself, you get the number inside the square root. So, √2 * √2 = 2.

Finally, multiplying 2√2 by 2, we get:

2 * 2 = 4

Therefore, (√98 - 5√2)•√2 simplifies to 4.