Question

Ayudaaaaaa
Porfaaaaaaa

Answer 1

Explicación paso a paso:

a=4 b=5 c=2

-2a² + b³ - c - 7a + 4b

-2(4)²+5³-(-2)-7(4)+4(5)

-8²+125-2-28+20

-64+125-2-28+20

61-2-28+20

59-28+20

31+20

51

×=5 a=2 b=3 c=4

\/x(x-a)(x-b)(x-c)+a+c

\/5(5-2)(5-3)(5-4)+5+4

\/5(3)(2)(1)+5+4

\/15(2)(1)+5+4

\/30(1)+5+4

\/30+5+4

\/35+4

\/39

6.244