How do you factor #x^3+343#?
1 Answer
Apr 15, 2018
Explanation:
#"this is a "color(blue)"sum of cubes"#
#•color(white)(x)a^3+b^3=(a+b)(a^2-ab+b^2)#
#"here "a=x" and "343=7^3rArrb=7#
#rArrx^3+343=(x+7)(x^2-7x+49)#
