Multiply the following
Full explanation needed
(iv) yz - zx - xy by x - y - z
(v) a2 + a-3 by 2 a2 - a +5
(vi) x2 + 2x +1 by x2 + 2x + 1
Answers
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Step-by-step explanation:
xy(x−y)+yz(y−z)+zx(z−x)
=xxy−xyy+y
2
z−yz
2
+xz
2
−x
2
z
2nd answer =a
2
+5)(b
3
+3)+5
=a
2
(b
3
+3)+5(b
3
+3)+5
=a
2
b
3
+3a
2
+5b
3
+15+5
=a
2
b
3
+3a
2
+5b
3
+20
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