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If x-y=4,y-z=3,x=7 then find out ,x square+y square+z square-xy-yz-zx=?

Posted by N H 7 years, 5 months ago

CBSE > Class 09 > Mathematics

1 answers

Akhana Walia 7 years, 5 months ago

If x=7 than y=3,z=1 4×4+3×3+1×1-4×3-3×1-1×4 =16+9+1-12-3-4 =26-19 =7.

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