Question

If a x b = 2a - 3b + ab, then 3 x 5 + 5 x 3 is equal to?
20
22
24
26

Answer 1

what do you think

Answer 2

26 but im not quite sure qwq

Answer 3

is that x a multiplication symbol or a variable?

Answer 4

x

Answer 5

\(\color{red}{a} \times \color{orange}{b} = 2\color{red}{a} - 3\color{orange}{b} + \color{red}{a}\color{orange}{b}\)

Answer 6

So what is

\(\color{red}{3} \times \color{orange}{5} = 2\color{red}{(3)} - 3\color{orange}{(5)} + \color{red}{(3)}\color{orange}{(5)}\)

\(\color{red}{5} \times \color{orange}{3} = 2\color{red}{(5)} - 3\color{orange}{(3)} + \color{red}{(5)}\color{orange}{(3)}\)

Answer 7

And then we add those two together

Answer 8

So let's do the first one first

\(\color{red}{3} \times \color{orange}{5} = 2\color{red}{(3)} - 3\color{orange}{(5)} + \color{red}{(3)}\color{orange}{(5)}\)

What is 2 * 3 = ?
What is 3 * 5 = ?
What is 3 * 5 = ?