Multiply binomial(x+1)(x-6)

x^2 - 5x - 6

Step-by-step explanation:

you can try to use the FOIL method. if you don't know what that is search it up because it makes these problems so much easier. I hope this helps

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,