Topic: Algebraic Expressions

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Answers
$1: 6x$
$2: 1.9x$
$3: -16t^{10}$
$4: 3k^7$
$5: -4xy$
$6: -9x-2$
$7: 19x+6$
$8: 8b^6-7$
$9: -5+4m$
$10: 2-3x$
$11: 0$
$12: 2n+12$
$13: -50m+5m^2$
$14: 24-11t+t^2$
$15: 7x^2+5x-18$
$16: w^2+22w+121$
$17: y^2-8gy+16g^2$
$18: n^2-36$