Question

Multiply: (5t – 4)(4t + 5)

Answer 1

The answer is this 20t2 + 9t – 20. Go look up a video for foiling 

Answer 2

Answer:

The product of the expression is:

            $20t^2+9t-20$

Step-by-step explanation:

We have to find the product of two algebraic  expressions which are given in terms of variable t  as:

           $(5t-4)(4t+5)$

We know that the product of two linear function will result in a quadratic equation i.e. a polynomial of degree 2.

We find the product as follows:

$(5t-4)(4t+5)=5t(4t+5)-4(4t+5)\\\\\\i.e.\\\\\\(5t-4)(4t+5)=20t^2+25t-16t-20\\\\\\i.e.\\\\(5t-4)(4t+5)=20t^2+9t-20$

Hence, the product is:

        $20t^2+9t-20$