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3 years ago

8

using the foil method multiply (5x+4)(5x-4) then add any like terms and write polynomial in standard form. Anybody have answers?

:(

2 answers:

Sonbull [250]3 years ago

8 0

The answer is 25x^2 - 16

BigorU [14]3 years ago

7 0

Answer:

$25x^{2} -16$

Plz click the Thanks button.

<Jayla>

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We can use systems of equations to solve this problem. Assuming j is Jim's weight and b is Bob's weight, the equations are:

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Let's get b - j = 1/2b into standard form (b, then j, then the equal sign, then the constant.)

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Now we know how much Bob weighs, for fun, let's find Jim's weight by substituting into the equation.

$120 + j = 180\\j = 180-120\\j = 60$

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