rozwiąż równania funkcji kwadratowej y=ax²+bx+c
a. (5x+1)²+x=(2x+5)²-12
b. (7x+2)²-2(x-5)²=(3x+4)²
c. (3x-2)² + 2x(7-3x)-4x²=5-(2x-5)²
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
a)25x^2+1+10x+x=4x^2+25+20x-12
21x^2-9x-12=0
√Δ=81+1008
Δ=33
x₁=(9-33)/42=-12/21
x₂=(9+33)/42=1
x=1 lub x=-12/21
b)49x²+4+28x-2x²-50+20x=9x²+16+24x
38x²+24x-62=0
19x²+12x-31=0
√Δ=144+2356
Δ=50
x₁=(-12-50)/38=-31/19
x₂=(-12+50)/38=1
x=1 lub x=-31/19
c)9x²+4-12x+14x-6x²-4x²=5-4x²-25+20x
3x²-18x+24=0
√Δ=324-288
Δ=6
x₁=(18-6)/6=2
x₂=(18+6)/6=4
x=2 lub x=4