Question

1.Tentukan hasil perkalian berikut !
a.(x-5)(x-4)
b.(x+6)(x-7)
c.(x+12)(x-12)
d.(2x+3)(x-1)
e.(4m+2)(4m-2)
2.Jabarkan dan sederhanakanlah !
a.(2a+3)(a pangkat dua +4a+3)
b.(2p-q)(36+12pq+p pangkat dua )

Answer 1

A.Xpangkat 2 -9X+20
b.Xpangkat 2 -X -42

Answer 2

A. (x-5)(x-4)
= x² - 4x - 5x+ 20
=x²-9x+20
b. (x+6)(x-7)
= x²-7x+6x-42
=x²-1x-42
c.(x+12)(x-12)
=x²-12x+12x-144
=x²-144
d.(2x+3)(x-1) 
= 2x²-2x+3x-3
=2x²+1x-3
e.(4m+2)(4m-2)
=16m²-8m+8m-4
=16m²-4

2. 
a.(2a+3)(a²+4a+3)
=2a+3+a²+4a+3
=2a+4a+a²+3+3
=6a+a²+6
b..(2p-q)(36+12pq+p²)
=2p-q-36+12 pq+p²
=2p+p²-q+12pq-36
moga membantu
thnks ^_^