(x + a)(x + b) = x2 +(a + b) x + ab. prof
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Step-by-step explanation:
=x(x+b) + a(x+b)
=x^2 + bx + ax + ab
=x^2 + x(b+a) + ab
=x^2 + x(a+b) + ab
Answered by
1
Answer:
Step-by-step explanation:(x+a)(x+b)=x(x+a)+b(x+a)
=x2+bx+ax+ab
x2+x(a+b)+ab
hence, (x+a)(x+b)=x2+x(a+b)+ab
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