Question

Va rog frumos!
Coroana

Answer 1

1)
(x+1)²=x²+2x+1²=x²+2x+1
(1+x)²=1²+2x+x²=1+2x+x²
(-x-1)²=(-x)²-2*(-x)*(-1)+1²=-x²-2x+1
(x-1)²=x²-2x+1
(1-x)²=1+2x-x²
(3-x)²=9-6x-x²
(x-3)²=x²-6x+9

2)
(x+3)²=x²+6x+9
(-x-3)²=-x²-6x+9
(x+y)²=x²+2xy+y²
(x-y)²=x²-2xy+y²
(-a+9)²=-a²-18a+81
(b-7)²=b²-14b+49
(5-x)²=25-10x+x²

3)
(a+2)²=a²+4a+4
(2x+5)²=(2x)²+2*2x*5+5²=4x²+20x+25
(3x-1)²=9x²-6x+1
(-x-7)²=-x²-14x+49
(5x-7)²=25x²-70x-49
(3a-2b)²=9a²-12ab-4b²

4)
(-y+7)²=y²-14y+49
(-x+4)²=-x²-8x+16
(1-a²)²=1-2a²+a⁴
(4-3b)²=16-24b+9b²
(2a-b)²=4a²-4ab+b²
(6a-3)²=36a²-36a+9

5)
(√2+1)²=(√2)²+2√2+1=2+2√2+1=3+2√2
(3-√3)²=9-6√3-3=6-6√3
(√5+1)²=(√5)²+2√5+1=6+2√5
(2-√5)²=4-4√5-5

6)
(1-√7)²
(√2-√3)²=2-2√6+3=5-2√6
(√3+√5)²=3+2√15+5=8+2√15

7)
(2x+√5)²=2x²+4x√5+5
scuze nu mai pot sta pe net restu ti le fac mai tarziu daca nu te ajuta altcineva ok