please solve this question and explain
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please solve this question and explain
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By usnig the pythagoras theorem u can easily solve this problem.
(x+9)^2 =(x+7)^2 +x^2
HOPE that it will help you ✌️ ✌️
Answer:
Step-by-step explanation:
It is a rectangle soangle is 90°
By Pythagorean theorem =
( x+9)²=x²+(x+7)²
Identity used=(a+b)²=a²+b²+2ab
x²+9²+2(x)(9)=x²+7²+2(x)(7)+x²
x²+81+18x=2x²+49+14x
2x²-x²+14x-18x+49-81=0
x²-4x-32=0
x²-8x+4x-32
x(x-8)+4(x-8)
(x+4)(x-8)
x=-4. x=8
Side can never be negative so,
x=8