Question

Factorisation
a(b – c) (b + c) – d (c – b)

Answer 1

Answer:

yard yd 1 yd = 36 in

1 yd = 3 ft

kilometer (metric) km 1 km is about 0.6 mi

a kilometer is shorter than a mile

a kilometer is a little more than half a mile

1 km = 1000 m

mile mi 1 mi is about 1.6 km

a mile is longer than a kilometer

a mile is a little more than one and a half kilometers

1 mi = 5,280 ft

Answer 2

Answer:

a(b-c) (b+c) - d(c-b)

= a(b-c) (b+c) + d(b-c)

= (b-c) [ a( b+c)] + d