Answer:
45
Step-by-step explanation:
[tex]x-y=5\\x+y=9\\\\\rightarrow (x-y)(x+y)=9\cdot5\\\rightarrow x^2-y^2=\boxed{45}[/tex]
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Answers & Comments
Answer:
45
Step-by-step explanation:
[tex]x-y=5\\x+y=9\\\\\rightarrow (x-y)(x+y)=9\cdot5\\\rightarrow x^2-y^2=\boxed{45}[/tex]