Simplify the expression: a. b^2+49–(b–7)^2 b. 2a+6b)^2–24ab

1 answer:

5 0

Part a b2+49−(b−7)2

Distribute:

=b2+49+−b2+14b+−49

Combine Like Terms:

=b2+49+−b2+14b+−49

=(b2+−b2)+(14b)+(49+−49)

=14b

Answer:

=14b
part b

(2a+6b)2−24ab

Distribute:

=4a2+24ab+36b2+−24ab

Combine Like Terms:

=4a2+24ab+36b2+−24ab

=(4a2)+(24ab+−24ab)+(36b2)

=4a2+36b2

Answer:

=4a2+36b2

You might be interested in

Which expression is equivalent to(60)^2-(12)^2?

seraphim [82]

Answer:

The answer is

${60}^{2} - {12}^{2} \\ = (60 - 12)(60 + 12)$

Step-by-step explanation:

I am a math teacher If you need any explanation you can communicate with me on Whats on this number +201557831028

3 0

2 years ago

Read 2 more answers

23 x 2<br><br> EZ question IK I’m just stoopid

mash [69]

It would be 46, have a nice day

3 0

2 years ago

Read 2 more answers

Please help i really don't know the answer.

inn [45]

Answer:

95 degrees

Step-by-step explanation:

The degrees of a pentagon adds up to 540 so just subtract the angles you have from that to get the answer

8 0

3 years ago

Read 2 more answers

Kisiki and Jembe are riding on a circular path.Kisiki completes a round in 24 minutes whereas Jembe completes a round in 36 minu

Lelechka [254]

My answer is 12 because I subtract 36 from 24 and got 12

8 0

3 years ago

A: x/4 +1 = -3 B: x+4 = -12 1) How can we get Equation B from Equation A?

Sveta_85 [38]

Answer:In the equation y = mx + b for a straight line, the number m is called the slope of the line. Let x = 0, then y = m • 0 + b, so y = b. The number b is the coordinate on the y-axis where the graph crosses the y-axi

Step-by-step explanation:

5 0

3 years ago