Write 7x2 − 4 + 6x3 − 4x − x4 in standard form. Group of answer choices −4+63+72−4−4 4+63+72+4+4 72+63−4−4−4 72+63−4−4−4

7x^2+4+6x^3-4x-x^4

Step-by-step explanation: can you tell me what you mean by the second

part or post a picture plz. so I can help.

the correct answer is 1: 2

step-by-step explanation:

hope this your welcome : )

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4