Question

Find the value of the following using a suitable identity:
6.25 X 6.25 +2 x 6.25 X 3.75 +3.75 X 3.75/
5.5 X 5.5 - 4.5 x 4.5

Answer 1

Answer:

$\huge\rm\underline\purple{ᗩᑎᗴᑎᗪᖇᗩ \: is \: ᕼᵉʳᵉ}$

$\huge\bf\underline{\red{ᗩ}\green{ᑎ}\orange{Տ}\pink{ᗯ}\purple{ᗴ}\blue{ᖇ}}$

Given:

(x+3)(x-5)

Find the value :

Solution :

(x+3)(x-5)

= (x-1+4)(x-1-4)

=(x-1)² -(4)²[:(a+b)(a-b)=a²-b²]

Hence : a=x-1 and b = 4

So , (x+3)(x-5) = (x-1)-(4)² =x÷2x+1-16=x-2x-15

Hence the value is x-2x-15

$\huge \color{red} \boxed{10 ԵհɑղƘՏ} \rightarrow \sf \: \: \: \: \: \: \: \: \: \: \: \boxed{\color{purple}{inbox} }$

Answer 2

Answer:

Answer:

$\huge\rm\underline\purple{ᗩᑎᗴᑎᗪᖇᗩ \: is \: ᕼᵉʳᵉ}$

$\huge\bf\underline{\red{ᗩ}\green{ᑎ}\orange{Տ}\pink{ᗯ}\purple{ᗴ}\blue{ᖇ}}$

Given:

(x+3)(x-5)

Find the value :

Solution :

(x+3)(x-5)

= (x-1+4)(x-1-4)

=(x-1)² -(4)²[:(a+b)(a-b)=a²-b²]

Hence : a=x-1 and b = 4

So , (x+3)(x-5) = (x-1)-(4)² =x÷2x+1-16=x-2x-15

Hence the value is x-2x-15

$\huge \color{red} \boxed{10 ԵհɑղƘՏ} \rightarrow \sf \: \: \: \: \: \: \: \: \: \: \: \boxed{\color{purple}{back}}$