Question

please ans if it is correct then I'll mark mark as branlist ​

Answer 1

Answer:

a-b+ab+b-c+bc+c-a+ac

=ab+bc+ac

=b(a+c)+ac

Answer 2

Answer:

ab+bc+ac

Expalnation:

4. Using column method:

    a -b +ab

      +b        -c +bc

   -a            +c          +ac

ans=ab+bc+ac

5.Answer:

5041

Step-by-step explanation:

(71)²=(70+1)²

(a+b)²=a²+2ab+b²

a=70 ; b=1

(70)²+(2×70×1)+(1)²

4900+140+1

5041

Hope it helped.