Hot Student Stories
top-5-grammar-and-spelling-checkers-to-rock-in-2019

Solve 3x2 = −12x − 15. x = −4 ± 2i x = −4 ± i x = −2 ± 2i x = −2 ± i

Heather Maxwell

in Mathematics

follow
followin
1 answer
5 views

1 answer


Blair Lewis on December 1, 2018

ANSWEREXPLANATIONWe use the method of completing the squares.The equation is to rewrite the above equation to obtain;we divide by 3 to get, add the half of the coefficient of both sides of the equation to obtain,in The right-hand side is now a perfect square.We take the square root of both sides to get, we add -2 to both sides simplify to get,


Add you answer