Which of the following is a disadvantage to using equations? CHECK ALL THAT APPLY (select more than 1 answer)

A. without a table or graph, you might forget what an equation represents

B. Equations are not possible with complicated problems

C. They are always the most difficult to use

D. They have to be used alone

answer: standard form is ax^2 + bx + c = 0

step-by-step explanation:

standard form is ax^2 + bx + c = 0

(2x + 1)(x - 2) = 0

distribute to get into standard form

2x^2 - 4x + x - 2 = 0

2x^2 - 3x - 2 = 0

a = 2, b= -3, c = -2

a is your answer

step-by-step explanation:

hans did not square the 40-unit side; he merely multiplied it by 2.   incorrect.

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step-by-step explanation:

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