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[7^5×7^12÷(7^5)^3]^5÷(7^5)^2-(7^4-7^2)^0

Răspuns :

-(7⁴-7²)^0 = -1
(7
⁵×7¹²÷7¹⁵)⁵÷7¹⁰-1 =
(7⁵⁺¹²⁻¹⁵)⁵÷7¹⁰-1 =
(7²)⁵÷7¹⁰-1 =
7¹⁰÷7¹⁰-1 =
7¹⁰⁻¹⁰-1 =
7⁰-1 =
1-1=
0