Question

simplify using suitable identies ( 5y – 2 ) ( 5y + 2 )​

Answer 1

Answer:

\begin{gathered}(5y + 2)(5y - 2) \\ Identity : \: (a + b)(a - b) = {a}^{2} - {b}^{2} \\ \\ Here , a=5y ; b=2 \\ \\ {(5y)}^{2} - {2}^{2} \\ = 25 {y}^{2} - 4\end{gathered}

(5y+2)(5y−2)

Identity:(a+b)(a−b)=a

2

−b

2

Here,a=5y;b=2

(5y)

2

−2

2

=25y

2

−4

Hope it's correct... !

Answer 2

Answer:

3.97+.86+6.72+.65+8.53+.42+9.31+.10+5.02+.89=