Question

Алгебра 7 класс решить

Answer 1

Ответ:

а²+2×а×1+1²

с²- 2×с×2+2²

4²+2×4×b+b²

в²+2×в×5+5²

х²-2×х×7+7²

9²-2×9×b+ b²

2²+2×2×y+y²

f²+2×f×3+3²

1²+2×1×k+k²

2²+2×2×x+x²

a²-2×a×5+5²

y²+2×y×4+4²

h²+2×h×11+11²

k²+2×k×20+20²

8²+2×8×b+b²

9²+2×9×c+c²

Answer 2

(a+1)^2=a^2+2a•1+1^2=a^2+2a+1
(c-2)^2=c^2-2c•2+2^2=c^2-4c+4
(4+b)^2=16+8b+b^2=b^2+8b+16
(в+5)^2=в^2+2в•5+5^2=в^2+10в+25
(x-7)^2=x^2-2x•7+7^2=x^2-14x+49
(9-b)^2=81-18b+b^2=b^2-18b+81
(2+y)^2=4+4y+y^2=y^2+4y+4
(f+3)^2=f^2+2f•3+3^2=f^2+6f+9
(1+k)^2=1+2k+k^2=k^2+2k+1
(2+x)^2=4+4x+x^2=x^2+4x+4
(a-5)^2=a^2-2a•5+5^2=a^2-10a+25
(y+4)^2=y^2+2y•4+4^2=y^2+8y+16
(h+11)^2=h^2+2h•11+11^2=h^2+22h+121
(k+20)^2=k^2+2k•20+20^2=k^2+40k+400
(8+b)^2=64+16b+b^2=b^2+16b+64
(9+c)^2=81+18c+c^2=c^2+18c+81

P.S. буду благодарен за отметку моего ответа лучшим)