Bantu jawab dong!!! (PR)…
no.1 & 2 (pake cara juga ya..plissss)
1.
x²-3x-10=0
=x²-5x+2x-10
=x(x-5) + 2 (x-5)
=(x-5) (x+2)
2.
4a²-9
= (2a+3)(2a-3)
No
1. (x-5)(x+2)=0
x=5 V x=(-2)
2. (2a-3)(2a+3)=0
2a=3 V 2a=(-3)
a=3/2 a= -3/2
3. (x-5)(x-4)=0
x=5 V x=4