at_answer_text_math
x²=36
x²-36 =a²-b²=(a-b)(a+b)
(x-6)(x+6)=0
x=6;-6
x²-25=0
25=5²
meme demarche que a tu facto x²-25 sur le meme modele, apres tu resous =0
2x²=-32
ne se reous pas ds R
4x²=64
meme demarche que a
64 =8²
(3x+4)²-9=a²-b²=(a-b)(a+b)
(3x+4-3)(3x+4+3)=0
(3x+1)(3x+7)=0
3x+1=0⇔3x=-1⇔x=-1/3
3x+7=0⇔3x=-7⇔x=-7/3
(-5x+1)²-3=0
(-5x+1-√3)(-5x+1+√3)=0
-5x+1-√3=0⇔-5x=-1+√3⇔-x=(-1+√3)/5⇔x=(1-√3)/5
-5x+1+√3=0⇔-5x=-1-√3⇔x=(1+√3)/5
(2x-3)²=0
2x-3=0⇔2x=3⇔x=3/2
(2x-3)²=-1
ne se resous pas ds R
at_explanation_text_math
