एक्स प्लस 4 के होल स्क्वायर माइनस एक्स माइनस 5 ke hold square=9
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Answer:
x=16
Step-by-step explanation:
(x+4)^2-(x-5)^2=9
x^2+16+2(4)(x)-x^2+25-2(x)(5)=9
x^2-x^2+16+25+8x-10x=9
41-2x=9
-2x=9-41
2x=41-9
2x=32
x=32/2
x=16
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