Hasil kali (−2x+3)(−2x−3)=…

Hasil kali (−2x+3)(−2x−3)=…

Jawaban dari pertanyaan di atas adalah 4x² – 9.

Perhatikan konsep berikut.
(a + b)(a – b) = a² – b²

Hasil kali (−2x+3)(−2x−3) yaitu:
(−2x+3)(−2x−3)
= (-2x)² – (3)²
= 4x² – 9

Jadi hasilnya adalah 4x² – 9.

Baca Juga :  Kate : Are you free tomorrow night, Diane? Diane :I'm sorry I will be visiting my uncle tomorrow night. Kate : What about you, Gina? Gina : I will be 1. ______ time with my cousin, Jane. Kate : Oh, so I'm alone. Diane : What about _____? I will be doing nothing. Kate : Lets go to the computer exhibition at JCC. Diane : Okay.