A repairman leans the top of an 15-ft ladder against the top of a stone wall. The base of the ladder is 4 ft from the wall. About how tall is the wall? ROUND to the nearest tenth, if necessary.

do you have an easier question cause this shh is hard like theheck

step-by-step explanation:

3+3+3+2*2*2+29*12 = 365

step-by-step explanation:

x^2 + 81

we can factor this using difference of square binomials.

rewrite the equation:

x^2 - (-81)

factor:

(a^2 - b^2) = (√a^2 + √b^2)(√a^2 - √b^2)

(x^2 - (-81) = (x + √-81)(x - √-81)

we can remove the - from under the radical by multiplying it by i.

(x^2 - (-81) = (x + i√81)(x - i√81)

(x^2 - (-81) = (x + 9i)(x - 9i)

we can check our answer by using foil:

x^2 - 9ix + 9ix - 81i^2

x^2 - 81^2

i^2 = -1

x^2 + 81