Dopolni naslednje račune.
(a+3)·(b+c+2)=ab+ac+2a+3b+3c+
(a–4)·(b+m–8)=ab+am– –4b–4m+
(a–4+b)·(b+5)=ab+5a–
–20+b2+
=ab+5a+
+20+b2
Pomnoži.
a) (a+b+1)·(y+2)
b) (x–1)·(y+z+2)
c) (a+b+c–5)·(2+x)
(a+3)·(b+c+2)=ab+ac+2a+3b+3c+
(a–4)·(b+m–8)=ab+am– –4b–4m+
(a–4+b)·(b+5)=ab+5a–
–20+b2+
=ab+5a+
+20+b2
Pomnoži.
a) (a+b+1)·(y+2)
b) (x–1)·(y+z+2)
c) (a+b+c–5)·(2+x)