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adding and subtracting polynomials

when x= -1 , y= 0 and z= 5

1.) -5(2x + 2x -3z)
2.) 3x​


Sagot :

Answer:

1. 95

2. -3

Step-by-step explanation:

1.

= -5([2Γ—-1]+[2Γ—-1]-[3Γ—5])

= -5(-2+-2-15)

= -5(-4-15)

= -5(-19)

= 95

2.

= 3Γ—-1

= -3