Question

am nevoie urgent
plsssss dau coroana​

Answer 1

Răspuns:

1.a²-b²=7

a+b=7

a²-b²=(a-b)(a+b)=7

(a-b)*7=7

a-b=7/7=1

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2)a=√13   b=4

√13<√16=4=>

√13<4

b>a

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3.ax+b=2(x+3)

ax+b=2x+6=>

a=2 b=6

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4.Aplici teorema lui Pitagora

6²+8²=

36+64=100

√100=10

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l=3√2

P=4l=4*3√2=12√2cm

Explicație pas cu pas: