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Alja [10]
3 years ago
9

2x^3+5x^2-10 if x=-2

Mathematics
2 answers:
viva [34]3 years ago
7 0

Hey there!

2x³ + 5x² - 10

It's given that the value of x is -2. So substitute it in the place of x in the equation.

2(-2)³ + 5(-2)² - 10

= 2 × -8 + 5 × 4 - 10

= -16 + 20 - 10

= 4 - 10

= <u>-</u><u> </u><u>6</u>

Hope it helps ya!

avanturin [10]3 years ago
6 0

▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪

Let's evaluate :

  • {2x}^{3}  + 5x {}^{2} - 10

  • 2( - 2) {}^{ 3}  + 5( - 2) {}^{2}  - 10

  • (2 \times  - 8) + (5 \times 4) - 10

  • - 16 + 20 - 10

  • - 26 + 20

  • - 6

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Step-by-step explanation:-

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REPOST
melamori03 [73]

Answer:

  1. 5/48, 3/16, .5, .75, 13
  2. 1/5, .35, 12/25,  .5, 4/5
  3. -3/4, -7/10, 3/40, 8/10
  4. -.65, -3/8, 5/16, 2/4

Step-by-step explanation:

  1. 5/48 = 1.0291666666 | 3/16 = .1875 the rest is obvious
  2. 1/5 = .2 | 12/25 = .48 | 4/5 = .8
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