Identify the variables, constants, and coefficients in the simplified expression. 5xy - 3yz - 5xz + yz - 4xz + 7xy First combine all like terms: (5xy+7xy)+(yz-3yz)-(5xz+4xz) 12xy-2yz-9xz Now replace the x,y & z terms with their numeric values: and evaluate it for x = 10, y = -4, z = -6. 12(10*-4)-2(-4*-6)-9(10*-6) 12*-40-2*24-9*-60 -480-48+540=12 ans.

You got it right. Good for you!!

i just dont know how to identify

the variables are x y and z The coefficients are 12, -2, and -9 There are no constants

6z + 1 + 4x^2 - 3y3 + 7x - 8y2 + 2x2 - x + 5z - 17 first you need to combine all like terms: (6z+5z)+(4x^2+2x^2)-3y3-8y^2+(7x-x)+(1-17) 11z+6x^2-3y^3-8y^2+6x-16 now replace x with -2, y with -3, z with -5. 11*-5+6*(-2)^2-3*(-3)^3-8*(-3)^2+6*(-2)-16 -55+6*4-3*-27-8*9-12-16 -55+24+81-72-12-16 -50 ans.

is this right? and how do you even Identify the variables, constants, and coefficients in the simplified expression.

What is the simplified expression?

the first

The simplified expression is the one you get after you combine the like terms.

i got that but in the one i just posted^^ whats the coff and constant?/

In your case it is 11z+6x^2-3y^3+6x-16

The coefficients are 11, 6, -3, 6 and =16 The variables are x, y, and z The constants are -16

I made a typo in the coefficients. they are 11, 6, and -3

okay thank you mertsj

yw

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