Evaluate (13- square root of -121)-(-4+ square root of -36)

Math
(13–121)-(-4+-36)
Simplify each term.
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Rewrite -121 as -1(121).
13–1(121)-(-4+-36)
Rewrite -1(121) as -1⋅121.
13-(-1⋅121)-(-4+-36)
Rewrite -1 as i.
13-(i⋅121)-(-4+-36)
Rewrite 121 as 112.
13-(i⋅112)-(-4+-36)
Pull terms out from under the radical, assuming positive real numbers.
13-(i⋅11)-(-4+-36)
Move 11 to the left of i.
13-(11⋅i)-(-4+-36)
Multiply 11 by -1.
13-11i-(-4+-36)
Rewrite -36 as -1(36).
13-11i-(-4+-1(36))
Rewrite -1(36) as -1⋅36.
13-11i-(-4+-1⋅36)
Rewrite -1 as i.
13-11i-(-4+i⋅36)
Simplify each term.
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Rewrite 36 as 62.
13-11i-(-4+i⋅62)
Pull terms out from under the radical, assuming positive real numbers.
13-11i-(-4+i⋅6)
Move 6 to the left of i.
13-11i-(-4+6i)
13-11i-(-4+6i)
Apply the distributive property.
13-11i–4-(6i)
Multiply -1 by -4.
13-11i+4-(6i)
Multiply 6 by -1.
13-11i+4-6i
13-11i+4-6i
Simplify by adding terms.
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Add 13 and 4.
17-11i-6i
Subtract 6i from -11i.
17-17i
17-17i
Evaluate (13- square root of -121)-(-4+ square root of -36)

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