Question

spunetimi va rog niste ecuatii cu formulele calcului prescurtat exemple vaa rog foarte mult 64 puncte va dau

Answer 1

$\bold{1.} \ 4x^2+16x+16=0 \\ \bold{2.} \ (x-4)(x+4)=9 \\ \bold{3.} \ (x+3)^2=0 \\ \bold{4.} \ (x+2)^2-x^2=6 \\ \bold{5.} \ (2x-1)^2-4y^2=10 \\ \bold{6.} \ 9x^2-5-(3x+2)^2=0 \\ \bold{7.} \ x^2+6x+4y^2-4y+10=0 \\ \bold{8.} \ 0,16x^2+0,8x+y^2-2y+2=0$

Answer 2

1)    3(x+5) - 5(1-x)(1+x) = (x-3)² + (2x-1)²+13
2)    3(1-x)² - 4(x-2)² +5(x-3)² =(2x-3)² +4-x
3)    (x-2)² - (x+1)² =x-4
4)    (2x+3)² +7=4(x-2)²
5)    (x+1)² +2(x-2)(x+2) =(3x-1)(x-3)+2