Find the product.
3(x + 4)(x - 5)
a. 3x - 11x-20
b. 3x2 - 20x
c. 3x2 - 3x-60
d. 3x2 - x-20

3(x+4)(x−5)

1 Expand by distributing terms.

(3x+12)(x-5)

2 Use the FOIL method: (a+b)(c+d)=ac+ad+bc+bd

−15x+12x−60

3 Collect like terms.

3x+(−15x+12x)−60

4 Simplify.

3x² −3x−60

pls Mark me brainliest answer

answer:   x = 3 + √11     and     x = 3 - √11

step-by-step explanation:

x² - 6x + 9 = 11

(x - 3)² = 11

x - 3 = ±√11

    x = 3 ± √11

x = 3 + √11     and     x = 3 - √11