First, we would simplify the numbers with exponents.
53-5 x 32(53=125, 52=9)
125-5 x 9
Next, we would multiply:
125-5 x 9 (5 x 9=45)
125-45
And then, subtract:
125-45 (125-45=80)
80
53-5 x 32=80
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Factor out '5'
Hence 5(5^2 - 3^2)
Factor the brackets
5(5-3)(5+3)
5(2)(8)
5(16) = 80 THe answer.