Question

find the value of 75² using identity​

Answer 1

Answer:

we can write

${75}^{2}$

as =

(70 + 5 ) ( 70 + 5 )

by using

${a + b}^{2}$

=

${a}^{2} + 2ab + {b}^{2}$

${70}^{2} + 2 \times 70 \times 5 + {5}^{2}$

= 22400