How do you factor the expression d^2-14d+49d2−14d+49?
1 Answer
Jun 19, 2018
Explanation:
"this is a "color(blue)"perfect square"this is a perfect square
•color(white)(x)(a+-b)^2=a^2+-2ab+b^2∙x(a±b)2=a2±2ab+b2
"here "a=d" and "b=-7here a=d and b=−7
2ab=2xxd xx-7=-14d2ab=2×d×−7=−14d
d^2-14d+49=(d-7)^2d2−14d+49=(d−7)2
