198+132=? make a ten or a hundred to add mentally

When rounded to tens, we get 330.

When rounded to hundreds, we get 300.

Step-by-step explanation:

198+132

Rounding to nearest tens.

198 = 200                                  

132 = 130                  

Adding both we get      

Rounding to nearest hundreds.

198 = 200

132 = 100

Adding both we get

- 2 + 10x³ - 21x² + 19x - 4

step-by-step explanation:

each term in the second factor is multiplied by each term in the first factor

x²(- 2x² + 4x - 1) - 3x(- 2x² + 4x - 1) + 4(- 2x² + 4x - 1) ← distribute

= - 2 + 4x³ - x² + 6x³ - 12x² + 3x -8x² + 16x - 4

collect like terms

= - 2 + 10x³ - 21x² + 19x - 4 ← in standard form

michael scott & dwight schrute

step-by-step explanation:

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