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Secondary 1 | Maths
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N L
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Secondary 1 chevron_right Maths chevron_right Singapore

I'm not too good at algebra, but is this correct? Thanks

Date Posted: 3 years ago
Views: 433
J
J
3 years ago
Yes it is.
J
J
3 years ago
Alternative working :

(-½x) × (-6y) × (-3z)²

= ½x × 6y × (3z)²

= 3xy × 9z²

= 27xyz²


(The negatives cancel out for the term in x and in y. As for the -3z, squaring it turns it positive so the negative sign is removed)

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Danny Low
Danny Low's answer
1016 answers (Tutor Details)
Your answer is correct. To avoid mistakes one way to do is to group all of the same terms together, in my working I listed first the constants, then all the x, all the y and so on. Hope this helps
N L
N L
3 years ago
Alright thank you :D
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jenis
Jenis's answer
7 answers (A Helpful Person)
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