hat
Li di Toni ap rezoud ekwasyon sa a pa ranpli a kare. "ax" kare plis "bx" plis "c" se egal a "0", kote yon "a" pi gran pase "0."
eng
It says Toni is solving this equation by completing the square. ax squared plus bx plus c is equal to 0, where a is greater than 0.