If a + b = 7 and ab = 12, find the value of a² – b²
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Hey,
(a + b) ^2 - (a - b) ^2 = 4ab
(7)^2 - a^2 - b^2 + 2ab = 4ab
49 - a^2 - b^2 = 24
a^2 - b^2 = 25 .
Hope this helps you buddy!!
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(a + b) ^2 - (a - b) ^2 = 4ab
(7)^2 - a^2 - b^2 + 2ab = 4ab
49 - a^2 - b^2 = 24
a^2 - b^2 = 25 .
Hope this helps you buddy!!
Take care always :):)
Plz mark as brainlest plz :):)!!!!!!
ital:
answer is 7
wait I know I am just editing by mistake I wrote
u have reported now I cannot do anything
oh.
correct it
I have done
can someone please show me the working?
please i want to know how you solve it
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