Question

Which counterexample disproves the conjecture? After completing several multiplication problems, a student concludes that the product of two bionomials is always a trinomail

Answer 1

@welshfella

Answer 2

try that. (a+b)(a−b)=a^2−b^2

Answer 3

Just plug in the numbers.

Answer 4

idk

Answer 5

@alivejeremy

Answer 6

@welshfella

Answer 7

yea one of these when expanded give an expression with just 2 terms.

can you expand these binomials?

Answer 8

for example the first one will give a trinomial when expanded

(x - 1)(x - 7) = x(x-7) - 1(x - 7) = x^2 - 7x - x + 7 = x^2 - 8x - 7 which is a trinomial

Answer 9

* that should be x^2 - 8x + 7

Answer 10

ok