¿en los trinomios cuadrados perfectos el primero y el tercer termino como i punto
deben estar?​

answer: 0.1,0.85

step-by-step explanation:

we know that

1) the inscribed angle measures half of the arc it comprises.

so

m∠dgf= > expression

2) the opposite angles in an inscribed quadrilateral are supplementary angles

so

m∠dgf=

m∠dgf=°

substitute in the expression to find the value of arc ef

therefore

the answer is

the measure of the arc ef is

-3n+2+5n-7=

2n+2-7=

2n-5 (d)