Question

fatore o polinômio 0,81x⁴-1,26x²y+0,49y² =

Answer 1

Resposta:

0,81x⁴-1,26x²y+0,49y²

(0,9x)²-2*0,9*0,7x²y+(0,7y)²

(0,9x²-0,7y)²

=(0,1*9x²-0,1*7y)²

=0,1²*(9x²-7y)²

=0,01 *(9x²-7y)*(9x²-7y)

=0,01 *(3x-√(7y))*(3x+√(7y))*(3x-√(7y))*(3x+√(7y))