Question

1 calcule o valor das expressões A) 2x+(3.4)²+(7.7) B) 3x+(2.6)+(8.8)² C)7.6+(28.3)+(4)² D)7x-(7.8)+(9:3)

Answer 1

Follows are the solution to the given points:

Explanation:

Given:

`A) \ \ 2x+(3.4)^2+(7.7) \\\\B) \ \ 3x+(2.6)+(8.8)^2\\\\C)\ \ 7.6+(28.3)+(4)^2 \\\\D)\ \ 7x-(7.8)+(9:3)`

For point A:

`\to 2x+(3.4)^2+(7.7)\\\\\to 2x+(11.56)+(7.7)\\\\\to 2x+19.26\\\\`

For point B:

`\to 3x+(2.6)+(8.8)^2\\\\\to 3x+(2.6)+77.44\\\\\to 3x+80.04`

For point C:

`\to \ 7.6+(28.3)+(4)^2 \\\\\to \ 7.6+(28.3)+16 \\\\\to \ 7.6+44.3 \\\\\to 51.9`

For point D:

`\to 7x-(7.8)+(9:3)\\\\\to 7x-(7.8)+ (9)/(3)\\\\\to 7x- (23.4+9)/(3)\\\\\to 7x- (32.4)/(3)\\\\\to 7x- 10.8`