14. What is the product of (x+ a) and (x + b)?
a) x² + (a - b) x + ab
b) x2 - (a + b) x + ab
c) x + (a + b)x - ab
d) x2 + (a + b) x + ab
Answers
Answered by
3
Answer:
d)x²+(a+b)x+ab
Step-by-step explanation:
(x+a) (x+b)
=x(x+b)+a(x+b)
=x²+xb+ax+ab
=x²+(a+b)x+ab
Answered by
0
Answer:
Answer
(x+a)(x+b)(x+c)
=[x
2
+(a+b)x+ab](x+c)
=x
2
(x+c)+[(a+b)x+ab](x+c)
=x
3
+x
2
c+ax
2
+bx
2
+acx+bcx+abx+a
=x
3
+(a+b+c)x
2
+(ab+bc+ca)x+abc
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