3 years ago

PLEASE HELP ASAP! ;)

Mathematics

2 answers:

timurjin [86]3 years ago

8 0

Answer:

Step-by-step explanation:

x + 58 = 180

x= 122

12y - 2 + 122 = 180

12y + 120 = 180

12y = 60

y= 5

12(5) - 2 = 60 - 2 = 58

Nana76 [90]3 years ago

6 0

(12y - 2) = 58
12y - 2 = 58
+ 2. +2
—————
12y = 60
—————
12. = 12
y = 5

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Multiply. (2x2 + 4x - 3)(x2 - 2x + 5)

BigorU [14]

For a moment, let $y=x^2-2x+5$ . Then by the distributive property,

$(2x^2+4x-3)p=2x^2p+4xp-3p$

Again by the distributive property,

$2x^2p=2x^2(x^2-2x+5)=2x^4-4x^3+10x^2$

$4xp=4x(x^2-2x+5)=4x^3-8x^2+20x$

$-3p=-3(x^2-2x+5)=-3x^2+6x-15$

Taking everything together, we get

$(2x^2+4x-3)(x^2-2x+5)=(2x^4-4x^3+10x^2)+(4x^3-8x^2+20x)+(-3x^2+6x-15)$
$(2x^2+4x-3)(x^2-2x+5)=2x^4-x^2+26x-15$