Question

(b+1)(6-b) (5x+2)(3x-8) (3-a)(a+7) срочно

Answer 1

(b+1)(6-b)=b+6( 6-b) (b+6)

Answer 2

Mathematical Expression Simplification

To simplify the given expression (b+1)(6-b) + (5x+2)(3x-8) + (3-a)(a+7), we can start by expanding each term and then combining like terms.

Expanding the first term: (b+1)(6-b) = 6(b+1) - (b+1)*b = 6b + 6 - b^2 - b

Expanding the second term: (5x+2)(3x-8) = 5x(3x) + 5x(-8) + 2(3x) + 2(-8) = 15x^2 - 40x + 6x - 16

Expanding the third term: (3-a)(a+7) = 3(a) + 3(7) - a(a) - a(7) = 3a + 21 - a^2 - 7a

Now, let's combine like terms and simplify the expression.

Combining like terms: (6b + 6 - b^2 - b) + (15x^2 - 40x + 6x - 16) + (3a + 21 - a^2 - 7a)

Simplifying further: -b^2 + 5b + 15x^2 - 34x - a^2 - 4a + 11

So, the simplified expression is -b^2 + 5b + 15x^2 - 34x - a^2 - 4a + 11.