Using the distributive property the product is -12x-20. To distribute you take the numbers and or variables outside of the paranthesis and multiply it by each one in the parenthesis such that 4x is multiplied by -3x getting -12x and multiplying 4x by -5 and the product is -20x and all together the answer is -12x-20
To solve this you distribute. Si multiply 4x and -3x to get -12x^2. Then multiply 4x and -5 to get -20x. Put those to answers together to get your final answer which is -12x^2-20x.
