Question

Представить в виде произведения двучлен
с2-0,49=
16-k2=
400-m2=
t2-225=
1.69-b2=
y2-16/81=
25x2-4=
25/36-64y2
(2 это квадрат)

Answer 1

$(c {}^{2} - 0.49) = (c - 0.7)(c + 0.7) \ 16 - k {}^{2} = (4 - k)(4 + k) \ 400 - m {}^{2} = (20 - m)(20 + m) \ t {}^{2} - 225 = (t - 15)(t + 15) \ 1.69 - b {}^{2} = (1.3 - b)(1.3 + b) \ y {}^{2} - frac{16}{81} = (y - frac{4}{9} )(y + frac{4}{9} ) \ 25x {}^{2} - 4 = (5x - 2)(5x + 2) \ frac{25}{36} - 64y {}^{2} = ( frac{5}{6} - 8y)( frac{5}{ 6} + 8y)$