Question

ayuda porfavor doy coronita,marco cómo la mejor , doy punto y los sigo​

Answer 1

Respuesta:

1. 6.75

2. 6.86

3. 21.79

4. 53.72

Explicación paso a paso:

Tienes que reemplazar

1. P(x)=$2x^{2}+3x-x^{2}$

$P(1.5)=2(1.5)^{2}+3(1.5)-(1.5)^{2}$

P(1.5)= 2(2.25)+4.50-2.25

P(1.5)=4.50+4.50-2.25

P(1.5)=6.75

2.

$P(y)=5y-y^{2}+3.5\\P(0.8)=5(0.8)-(0.8)^{2} +3.5$

P(0.8)= 4- 0.64+3.5

P(0.8)= 6.86

3.

$P(a;b)=ab^{2} +a^{2}-b\\P( 1.8; 3.5)= 1.8(3.5)^{2} +(1.8)^{2}-3.5$

= 1.8(12.25)+3.24-3.5

=22.05+3.24-3.5= 21.79

4.

$P(m;n)=4mn-m^{2}+6.4\\P(2.6; 5.2)=4(2.6)(5.2)-(2.6)^{2}+6.4$

= 4(13.52)-6.76+6.4

= 54.08-6.76+6.4= 47.32+6.4=53.72