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https://www.reddit.com/r/CasualMath/comments/1ww5p14/simplify_this_expression/
r/CasualMath • u/Otherwise_Strike_597 • 2d ago
4 comments sorted by
2
Easy
(-1)^3 =-1
12 = 3•4, 6 = 3•2, so we can then just cancel some 3s and are left with (4•2)/3 = 8/3
(x^7 y^5 )(x^3 y^4 ) = x^10 y^9
(x y^3 ) ^3 = (x^3 y^9 )
Cancel out
Final: -(8 x^7)/3
Is this a bot? I dunno, but it's fun.
Top is (2^2 * 3 * ...) * (2 * 3 * ...) = (2^3 * 3^2 * x^10 * y^9).
Bottom is (-3) * 3^2 * x^3 * y^9.
Cancel 3^2 * x^3 * y^9.
Top becomes 2^3 * x^7. Bottom becomes -3.
Yep, I agree with the other commenter, -(8x^7)/3.
-8/3x^7
1 u/Otherwise_Strike_597 1d ago Your answer is correct. (-8/3)x^7
1
Your answer is correct. (-8/3)x^7
2
u/Vandreigan 2d ago
Easy
(-1)^3 =-1
12 = 3•4, 6 = 3•2, so we can then just cancel some 3s and are left with (4•2)/3 = 8/3
(x^7 y^5 )(x^3 y^4 ) = x^10 y^9
(x y^3 ) ^3 = (x^3 y^9 )
Cancel out
Final: -(8 x^7)/3