Question

please answer the questions correctly
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Answer 1

Step-by-step explanation:

(x² + 3)(x − 3) + 9

x²(x−3) + 3(x−3) + 9

x² − 3x² + 3x − 9 + 9

x³ −3x² + 3x

(x + 5) (x + 6) (x + 7)

(x + 5) (x² + 13x + 42)

x³ + 13x² + 42x + 5x² + 65x + 210

x³ + 18x² + 107x + 210

(p+ q) (r + s) + (p - q) (r - s) - 2(pr + qs)

pr + ps + qr + qs + pr - ps - qr + qs - 2pr - 2qs

2pr + 2qs - 2pr - 2qs

0

(x + 3) (x - 3) (x + 4) (x-4)

(x² - 9)(x² - 16)

x² - 16x² - 9x² + 144

x² - 24x² + 144

(p+q−2r) (2p−q+r) − 4qr

p(2p−q+r) + q(2p−q+r) − 2r(2p−q+r) − 4qr

2p² − pq +pr+2pq−q² +qr−4pr+2qr−2r² −4qr

2p² −q² −2r² +pq−3pr−2qr

(x + y + z) (x - y + z) + (x +y-z) (-x + y + z) - 4zx

x² − xy + xz + xy − y² + yz + xz− yz + z² −x² +xy+xz−xy+x² + yx + xz− yz −z² −4zx

0

Answer 2

Step-by-step explanation:

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