the sum of two expression is 42x2-18y2.if one of them Is 15x2+8xy-y2,then find the other
Answers
Answered by
1
Answer:
27x2+8xy−19y2
Step-by-step explanation:
First number +Other number =Sum
15x2+8xy-y2 + ??=42x2-18y2
Sum -First number =Other number
42x2-18y2 --- 15x2+8xy-y2
=Let's simplify step-by-step.
42x2−18y2−15x2+8xy−y2
=42x2+−18y2+−15x2+8xy+−y2
Combine Like Terms:
=42x2+−18y2+−15x2+8xy+−y2
=(42x2+−15x2)+(8xy)+(−18y2+−y2)
=27x2+8xy+−19y2
Answer:
=27x2+8xy−19y2
Other number will be 27x2+8xy−19y2
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yess first one is right answer
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