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1) Expand (x + 5)(x + 8) to form a quadratic expression
2) Expand (x - 1)(x + 3) to form a quadratic expression
3) Expand (x - 2)(x - 4) to form a quadratic expression
4) Expand (2x + 2)(x + 9) to form a quadratic expression
5) Expand (x - 7)(3x + 2) to form a quadratic expression ANSWER ALL CORRECTLY PLEASE I NEED TO GET DONE QUICKLY BIG 20 POINTS I WILL MARK BRAINLIEST

Respuesta :

Answer:

Step-by-step explanation:

1) (x + 5)(x + 8)

=x(x +8)+5(x + 8)

=x^2+8x+5x+40

=x^2+13x+40

2)(x-1)(x+3)

=x(x+3)-1(x+3)

=x^2+3x-1x-3

=x^2+2x-3

3)(x-2)(x+9)

=x(x+9)-2(x+9)

=x^2+9x-2x-18

=x^2+7x-18

4)(2x+2)(x+9)

=2x(x+9)+2(x+9)

=2x^2+18x+2x+18

=2x^2+20x+18

5)(x-7)(3x+2)

=x(3x+3)-7(3x+2)

=3x^2+3x-21x-14

=3x^2-18x-14

NUMBER 1

(x + 5)(x + 8)

- factor the x

=x(x +8)+5(x + 8)

-Distribute

=x^2+8x+5x+40

-Combine like terms

=x^2+13x+40

-Final answer

NUMBER 2

(x-1)(x+3)

-Factor

=x(x+3)-1(x+3)

-Distribute

=x^2+3x-1x-3

-Combine like terms

=x^2+2x-3c

NUMBER 3

(x-2)(x+9)

-Factor

=x(x+9)-2(x+9)

-Distribute

=x^2+9x-2x-18

-Combine like terms

=x^2+7x-18

-Final answer.

NUMBER 4

(2x+2)(x+9)

-Factor

=2x(x+9)+2(x+9)

-Distribute

=2x^2+18x+2x+18

-Combine like terms

=2x^2+20x+18

-Final answer.

NUMBER 5

(x-7)(3x+2)

-Factor

=x(3x+3)-7(3x+2)

-Distribute

=3x^2+3x-21x-14

-Combine like terms

=3x^2-18x-14

-Final answer.

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