frances8049 frances8049

02-02-2015
Mathematics

contestada

If x = –1 and y = 2, what is the value of the expression 2x3 – 3xy ?

Respuesta :

02-02-2015

[tex]x=-1, \ y=2 \\ \\ 2x^3-3xy=2 \times (-1)^3-3 \times (-1) \times 2=2 \times (-1) +6=-2+6=4[/tex]

Answer Link

Otras preguntas

In which sample is the average kinetic energy of the particles greatest? (1) 10. mL of HCl(aq) at 25°C (2) 15 mL of HCl(aq) at 20.°C (3) 10. mL of H2O(l) at 35°

who was a king of mesopotamia he tried to make his queen happy by building the hanging gardens of babylon one of the seven wonders of the ancient world

Given the balanced equation: 4Fe(s) + 3O2(g) ==>2Fe2O3(s) + 1640 kJ Which phrase best describes this reaction? (1) endothermic with DH = +1640 kJ (2) endothe

Which Period 4 element has the most metallic properties? (1) As (3) Ge (2) Br (4) Sc

Which molecule contains a triple covalent bond? (1) H2 (3) O2 (2) N2 (4) Cl2

what are two different numbers that round to 9.2 when rounded to the nearest tenth

Why do scientists study the Iceman's clothing tools and body

solve the equation 4x^2-12x=7 algebraically for x

A reaction is most likely to occur when reactant particles collide with (1) proper energy, only (2) proper orientation, only (3) both proper energy and proper o

which of the following was not a weakness of the articles of confederation (1781-1789)?