Question

(i) (t + 32) (t - s)
(iv) (a + b) (c-d) + (a - b) (c + d) + 2 (ac + bd).
(iv) (72_n
4 no. simplify​

Answer 1

Step-by-step explanation:

(i)

Method:BINOMIAL MULTIPLICATION

(t+32)(t-s)

t(t-s) 32(t-s)

t^2-ts+32t-32s

(ii)

(a+b) (c-d) +(a-b) (c+d) +2(ac+bd)

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

= ac-ad+bc-bd

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

= ac+ad-bc-bd

2(ac+bd) = 2ac+2bd

ac-ad+bc-bd+ac+ad-bc-bd+2ac+2bd

ac+ac+2ac=4ac