1)
a^2+10ab+25b^2 (a+5b)^2 a+5b
= =
ab+5b^2 b(a+5b) b
2) a+5b 7a-35b a+5b 7(a-5b) 7
* = * =
b a^2-25b^2 b (a-5b)(a+5b) b
4x^2+13x+3
Д=13^2-4*3*4=169-48=121
х=-13-11/8=-3
х=-13+11/8=-0.25
ax2 + bx + c = a(x - x1)(x - x2)
4x^2+13x+3=4(х+3)(х+0.25)
1)
a^2+10ab+25b^2 (a+5b)^2 a+5b
= =
ab+5b^2 b(a+5b) b
2) a+5b 7a-35b a+5b 7(a-5b) 7
* = * =
b a^2-25b^2 b (a-5b)(a+5b) b
4x^2+13x+3
Д=13^2-4*3*4=169-48=121
х=-13-11/8=-3
х=-13+11/8=-0.25
ax2 + bx + c = a(x - x1)(x - x2)
4x^2+13x+3=4(х+3)(х+0.25)