x²-81 =…………….. =…………….. (x + 2)²-(5x −1)² =…………….. =…………….. 9x² - 4 =…………… =……………
Mathématiques
mila8919
Question
x²-81
=……………..
=……………..
(x + 2)²-(5x −1)²
=……………..
=……………..
9x² - 4
=……………
=……………
=……………..
=……………..
(x + 2)²-(5x −1)²
=……………..
=……………..
9x² - 4
=……………
=……………