Question

4y(y+4)-2y(5-y)
при y=7,2​

Answer 1

4*7,2(7,2+4)-2*7,2(5-7,2)=354,24

Answer 2

Ответ:

354,24

Объяснение:

$4y(y+4)-2y(5-y)=4y^{2} +16y-10y+2y^{2}=6y^{2} +6y\\6*7.2^{2} +6*7.2=311.04+43.2=354.24$