Question

please answer faster please I will beg u pls understand my situation​

Answer 1

Answer:

Step-by-step explanation:

15.a=5,b=2

2.a=8,b=3

17.a=6,b=-4

Answer 2

Answer:

15)

$a + b = 7$

$ab = 10$

$(a + b)^{2} = {a}^{2} + {b}^{2} + 2ab$

$49 = {a}^{2} + {b}^{2} + 20$

${a}^{2} + {b}^{2} = 29$

$(a - b) ^{2} = {a}^{2} + {b}^{2} - 2ab$

$a - b = \sqrt{29 - 20}$

$a - b = \sqrt{9}$

$a - b = + 3 \: \: or \: - 3$

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