Find the product. (2x-3)(2x+5)

Question



Answer 1

Us the "FOIL" method.

Do 4 multiplications. "F" for first means multiply the first term within each factor, or 2x times 2x = 4x²

Then "O" stands for outer terms. Multiply them together, 2x times 5 = 10x

Then "I" stands for inside terms. Multiply -3 times 2x = -6x

Then "L" stands for last terms, multiply -3 times +5 = -15

Now just sum them all together,

4x²+10x-6x-15

combine the two inner terms: 4x² +4x -15