Question

7.If a=70 & b=25. Verify that (a-b) (a+b)=axa-bxb​

Answer 1

Step-by-step explanation:

=(70-25)(70+25) , =70*70-25*25

=45*95 , =70^2-25^2

=4275 , =4900-625=4275

hence verified

Answer 2

Answer:

a=70

b=25

(a-b)(a+b)=a×a-b×b

(70-25)(70+25)=70×70-25×25

70×(70+25)-25×(70+25)=4900-625

70×85-25×85=4275

5950-2125=4275

3825 unequal 4275

hence 3825 unequal 4275