Question

Tolong dikerjakan dengan caranya yang dilingkari

Answer 1

Gambar 1
»(2p-5)/4:(p+1)/16p= (2p-5)/4 x 16p/(p+1)
=16p(2p-5):4(p+1)=(32p²-80p)/4p+4
4(8p²-20p)/4(p+1)=8p²-20p/p+1
dirasionalkan 8p²-20p/p+1.(p-1/p-1)
=( 8p²-20p)(p-1)/(p+1)(p-1)
= 8p³-28p²+20p/p²-1
gambar 2
»3x²-22x+40=(3x-10)(x-4)
x1=10/3. Dan x2=4
gambar 3
»a²b²c²:2(a-b)= a²b²c²:2a-2b.(2a+2b)
=(abc)².2(a-b)/(4a²-4b²)