Question

What is the indicated product of 5x+7

Answer 1

Answer:

5x(3x+4)+7(3x+4)

15x^2+20+21x+28

15x^2+41x+28 answer

Answer 2

Answer:

product of 5x+7 and 5x-7 is

Step-by-step explanation:

We need to find product of (5x+7)(5x−7y)

By using identity (a+b)(a−b)=a^2−b^2

We have a=5x,b=7y

Thus (5x+7y)(5x−7y)=(5x)^2 −(7y)^2=25x^2−49y^2

the answer is 25x^2−49y^2

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