2b^2-9b-5 how do you answer this by factoring - id22955033870, achasengnou792

Ответ:

kate5582

18.01.2022

Simple...

you have: $2b^{2}-9b-5$

Using the box method-->>>

What multiplies to -10 and adds to -9?

-10*1=-10

-10+1=-9

(b-5)(2b+1)

Thus, your answer.

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Ответ:

pheonixhowls

19.09.2020

Mathematics

so, to find the x intercept, we want f(x)=0. that instantly gives us cos(x+3)=0 bbecause 2 equal 0. cos(x+3) equals 0 when:

$\cos(x+3)=0 \implies \\x+3=\cos^{-1}{(0)} \implies\\x=\cos^{-1}{(0)}-3$

we also know that the arccosine of 0 is $\frac{\pi}{2}$ , meaning we are looking for the decimal approximation of: $\frac{\pi}{2}-3$ , which is -1.42920367, and when rounded to two decimal places it is -1.429

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2b^2-9b-5
how do you answer this by factoring

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