Given A2-B2 = 8, a + B = 4, find the value of a and B

Given A2-B2 = 8, a + B = 4, find the value of a and B


∵ A2-B2 = (a + b) (a-b) = 8, ∵ a + B = 4, ∵ A-B = 2, a = 3, B = 1



Given that A2 + 2Ab = 8, B2 + 2Ab = - 7, find the value a of A2-B2, where B is followed by 2 squares


a²+2ab=8 ①
b²+2ab=-7 ②
① - 2
a²+2ab-b²-2ab=8-(-7)
a²-b²=15
Do not know, welcome to ask



Given A2 + 2Ab + b2-a-b + 0.25 = 0, find the value of a + B


a²+2ab+b²-a-b+0.25=0
(a+b)²-(a+b)+0.25=0
(a+b-0.5)²=0
a+b=0.5
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