Question

8. Using the formula (a + b)2 = (a2 + 2ab + b2), evaluate:
(a) (310)
(b) (508)
(c) (630)
Plz tell fast!!?​

Answer 1

Answer:

310=(300+10)²now use the identity

Answer 2

Answer:

a. ($310)^{2}$=$(300+10)^{2}$

90000+6000+100

=96100

b.$(508)^{2}$=$(500+8)^{2}$

250000+8000+64

=258064

c.$(630)^{2}$=$(600+30)^{2}$

360000+36000+900

=396900

Step-by-step explanation: