The length of a rectangle is 10cm more than its breadth and its area
is 144cm.
if 'x 'is taken as breadth, what is its length? ii) Form a second degree equation using the above data?
ii) Which number is to be added to x+10x to get a perfect square?
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ANSWER
i . if breath is equal to x cm
then,
length is equal to x + 10 cm
ii. area = length × breadth
=} 144 = (x + 10) × x
then,
x^2 + 10x - 144 = 0
=} ×^2 + 18x - 8x - 144 = 0
=} x(x + 18) - 8(x - 18) = 0
=} (x + 18) ( x - 8 ) = 0
ii) Which number is to be added to x+10x to get a perfect square?
Sorry I don't know how to solve this one .
HOPE THE ABOVE MENTIONED SOLUTION BE HELPFUL.
PLEASE RATE THE ANSWER.
Answered by
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Answer:
let try
Step-by-step explanation:
(ii) when x=8
then 12 is to be added to x to get a perfect square.
i.e.(8)+10(8)+12=8+80+12
=100 which is a perfect square
x= - 18 is neglected as sides of triangle cannot be negative.
hope it helps you.
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