How do you factor the expression #d^2-14d+49#?
1 Answer
Jun 19, 2018
Explanation:
#"this is a "color(blue)"perfect square"#
#•color(white)(x)(a+-b)^2=a^2+-2ab+b^2#
#"here "a=d" and "b=-7#
#2ab=2xxd xx-7=-14d#
#d^2-14d+49=(d-7)^2#
