Simplify each of the following:
20. a (b - c) + b(c-a) + c(a - b)
21. a (b -c) - b(c-a)-c(a - b)
22. 3x2 + 2(x + 2) - 3x (2x +1)
23. x(x + 4) + 3x (2x2 - 1) + 4x2 + 4
24. 2x2 + 3x (1 – 2x) + x (x +1)
25. ab(a - b) + ab? (4ab- 2a) - ab (1 - 2b)
26. 4st(s – t) - 6s2(t-t2) - 3t2 (2s2 – s) + 2st (s -t)
Answers
Answered by
0
Step-by-step explanation:
20. a (b-c)+b(c-a)+c(a-b)
ab-ac+bc-ab+ac-bc
o answers.ok
Answered by
0
Answer:
20.ab-ac+bc-ca+ca-cb
by rearranging ab-ab+bc-bc+ca-ca
=0+0+0=0
21.this is the same as first one the answer is 0
22. 6+2x+4-6x^2+3x
10+5x-6x^2
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