Jawaban:
a. –
b. (X+2)(X-4)= X²+4X-2X-8= X²+2X-8=0
c.(X-7)(X-2)= X²-2x-7x+14= x²-9+14=0
d.(x-2) (x+1)= x²-1x-2x-2= x²+x-2=0
e. –
Jawaban:
a. –
b. (X+2)(X-4)= X²+4X-2X-8= X²+2X-8=0
c.(X-7)(X-2)= X²-2x-7x+14= x²-9+14=0
d.(x-2) (x+1)= x²-1x-2x-2= x²+x-2=0
e. –