Question

3. Evaluate using suitable identities 72²​

Answer 1

Step-by-step explanation:

${(70 + 2)}^{2}$

$= {70 }^{2} + 2 \times 70 \times 2 + {2}^{2}$

$= 4900 + 280 + 4$

$= 5184$

Answer 2

Answer:

= (70+2)^2

= (70)^2+2^2+2*70*2

= 4900+4+280

= 5184