Question

Evaluate the expression 4xy-(x+7) if x=-2 and y=5

Answer 1

Answer:-45

Explanation:

first plug in the x and the y values

4(-2)(5)-(-2+7)

The start using pemdas to simplify

*or bodmas depends on what you learned

Then you should arrive to this

4(-2)(5)+ -(5)

-8(5)+ -5

-40-5= -45

Hope that helps

Answer 2

Given:-

• 
  `\tt \: x = -2`

`\:`

• 
  `\tt \: y = 5`

`\:`

Solution:-

• 
  `\tt \: 4xy - ( x + 7 )`

now , put the given values of x = -2 nd y = 5 in equation :

`\:`

• 
  `\tt \: 4( -2 ) ( 5 ) - ( -2 + 7 )`

`\:`

• 
  `\tt \: -8( 5 ) - 5`

`\:`

• 
  `\tt \: -40 - 5`

`\:`

• 
  `\boxed{ \tt{ \orange{ \:-45 \: }}}`

`\:`

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hope it helps! :)