Question

Раскрой скобки: (4a+7b)²​

Answer 1

Объяснение:

(4а + 7b)² = (4a)² + 2 * 4a * 7b + (7b)² = 16a² + 56ab + 49b²

Answer 2

To expand the expression $(4a + 7b)^2$, you can use the formula for squaring a binomial:

$(a + b)^2 = a^2 + 2ab + b^2$

In this case, $a$ is $4a$ and $b$ is $7b$. So, the expression becomes:

$(4a + 7b)^2 = (4a)^2 + 2(4a)(7b) + (7b)^2$

Now, simplify each term:

$(4a)^2 = 16a^2$

$2(4a)(7b) = 56ab$

$(7b)^2 = 49b^2$

Putting it all together:

$(4a + 7b)^2 = 16a^2 + 56ab + 49b^2$