Question

Resolva as inequações do 2° grau a seguir :

a) -x²+9=0

b) x²-14x+49=0

c) x²+16x+64=0

d) 3x²-5x=0

Resolva as inequações a seguir :

a) x²-14x+49 ≥ 0

b) (3x²-5x).(-4x+10)<0

c) (-x²+9).(-9x²+1)≥0

d) x+3≤4x-5

Answer 1

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