the difference of two number is 5 the difference of their squares is 45 find the number
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Answered by
0
Answer:
a+b=5
a2-b2=45
a2-b2=(a+b)(a-b)=5(a-b)=45
a+b=5
a -b=9
add them
2a=14 so a=7
subtract them
2b=-4
b=-2
Answered by
0
Answer:
The numbers are 2 and 7
Step-by-step explanation:
let the two unknown numbers be X and Y
x-y=5 which becomes X=y+5
and it's given x²-y²=45
substitung value of X in equation 2
(y+5)²-y²=45
y²+25+10y-y²=45
10y+25=45
10y=20
y=2
X=y+5=7
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