a. 34^2 + 66^2 + 68 x 66

= 34 x 34 + 66 x 66 + 68 x 66

= 34 x 34 + 66 x (66 + 68)

= 34 x 34 + 66 x 134

= 34 x 34 + 66 x 34 + 66 x 100

= 34 x (34 + 66) + 66 x 100

= 34 x 100 + 66 x 100

= (34 + 66) x 100

= 100 x 100

= 10000

\(34^2+66^2+68.66\)

\(=34.34+66.66+68.66\)

\(=34.34+66.\left(68+66\right)\)

\(=34.34+66.134\)

\(=34.34+66.\left(100+34\right)\)

\(=34.34+66.100+66.34\)

\(=34.\left(66+34\right)+66.100\)

\(=34.100+66.100\)

\(=\left(34+66\right).100\)

\(=100^2\)

\(=10000\)

( 34^2+66^2+68.66

= 34^2 + 66^2 + 2. 34.66

= ( 34+66)^2

= 100^2 = 10 000

b) 74^2 + 24^2 - 48.74

= 74^2 + 24^2 - 2. 74 . 24

= (74-24)^2 = 50^2 = 2500 

a) 34^2 + 66^2 + 68 . 66 = 5580,66

b) 74^2 + 24^2 – 48 . 74 = 6003.26 

a, = 34^2 + 66^2 + 2.34.66

    = (34+66)^2 = 100^2 = 10000

b, = 74^2+24^2-2.24.74

   = (74-24)^2 = 500^2 = 250000

Tk mk nha

a/ 34^2 + 66^2 + 68 . 66

=34²+2.34.66+66²

=(34+66)²

=100²

=10000

b/ 74^2 + 24^2 - 48 . 74

=74²-2.74.24+24²

=(74-24)²

=50²

=2500

\(a,34^2+66^2+68.66\)

\(=34^2+2.34.66+66^2\)

\(=\left(34+66\right)^2\)

\(=100^2\)

\(=10000\)

\(b,74^2+24^2-48.74\)

\(=74^2-2.74.24+24^2\)

\(=\left(74-24\right)^2\)

\(=50^2\)

\(=2500\)

a) \(34^2+66^2+68.66\)

\(=34^2+2.34.66+66^2\)

\(=\left(34+66\right)^2\)

\(=100^2=10000\)

b)  \(74^2+24^2-48.74\)

\(=74^2-2.74.24+24^2\)

\(=\left(74-24\right)^2\)

\(=50^2=2500\)

A= 101² = 10201

B= 109² = 11881

C= 34² + 66² + 68*66 = 34² + 2*34*66 + 66² = (34 + 36)² =70² = 4900

D=74² + 24² - 48 *74 = 74² - 2*24 *74 + 24² = (74 - 24)²= 50² = 2500

342 + 68.66 + 662

= 342 + 2.34.66 + 662

= (34 + 66)2

= 1002

= 10000