peaches9910
peaches9910 peaches9910
  • 10-09-2018
  • Mathematics
contestada

3a^2-5b+8 when a=-2 and b=3

Respuesta :

kevindinh13 kevindinh13
  • 10-09-2018

[tex] 3( - 2)^{2} - 5(3) + 8[/tex]
12-15+8
=5
Answer Link
cerlyn16
cerlyn16 cerlyn16
  • 10-09-2018

the answer is 5

3a^2-5b+8

3(-2)^2-5(3)+8

3(4)-15+8

4 becomes positive because negative multiplied by negative is positive

12-15+8

combine like terms.

20-15 is equals to 5

Answer Link

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