Question

3. Simplify.
(1) (x2-5) (x + 5) + 25
(iii) (t + s2) (t-s)
(iv) (a + b)(c- d) + (a - b)(c + d) + 2 (ac + bd)
(V) (x + y)(2x + y) + (x + 2y)(x - y)
(vi) (x + y)(x2 - xy + y2) vii.) (1.5x – 4y)(1.5x + 4y + 3) - 4.5x + 12y
(viii) (a + b + c)(a + b -c)
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Answer 1

Step-by-step explanation:

ANSWER

(i) x2(x+5)−5(x+5)+25

=x3+5x2−5x−25+25

=x3+5x2−5x

(ii) a2b3+3a2+5b3+15+5

=a2b3+3a2+5b3+20

(iii) t(t2−s)+s2(t2−s)

=t3−st+s2t2−s3

(iv) a(c−d)+b(c−d)+a(c+d)−b(c+d)+2(ac+bd)

=ac−ad+bc−bd+ac+ad−bc−bd+2ac+2bd

=4ac

(v) 2x2+xy+2xy+y

Answer 2

Answer:

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