Question

Найти значение выражения (2а-3)(5+а)) при а=-3

Answer 1

(2×(-3)-3)×(5+(-3))=(-6-3)×2=(-9)×2=-18

Answer 2

To find the value of the expression (2a - 3)(5 + a) when a = -3, simply substitute the value of a into the expression and perform the calculations:

(2a - 3)(5 + a) = (2*(-3) - 3)(5 + (-3))

Now, calculate the values inside the parentheses:

= (-6 - 3)(5 - 3)

= (-9)(2)

Finally, multiply the values:

= -18

So, the value of the expression (2a - 3)(5 + a) when a = -3 is -18.