Question

Представьте в виде многочлена и упростите выражения.

Answer 1

▪2.

$5 {a}^{2} (4 {a}^{3} - {a}^{2} + 1) = 20 {a}^{6} - 5 {a}^{4} + 5 {a}^{2}$
▪3.

$(3c - x)(2c - 5x) = 6 {c}^{2} - 15cx - 2cx + 5 {x}^{2} = 6 {c}^{2} - 17cx + 5 {x}^{2}$
▪4.

${(3a + 2b)}^{2} = 9 {a}^{2} + 12ab + 4 {b}^{2}$
▪5.

$5x(2x + 3) - (x - 1)(x - 6) = 10 {x}^{2} + 15x - {x}^{2} + 6x + x - 6 = 9 {x}^{2} + 22x - 6$
▪6.

${(a - c)}^{2} - c(a - 3c) = {a}^{2} - 2ac + {c}^{2} - ac + 3 {c}^{2} = {a}^{2} - 3ac + 4 {c}^{2}$