Question

pl pp give answer plpl​

Answer 1

Answer:

a) (x² - 5)(x + 5) + 25

x³ + 5x² - 5x - 25 + 25

x³ + 5x² - 5x.

b) (a + b + c)(a + b - c)

a² + ab - ac + ab + b² - bc + ac + bc - c²

a² + b² - c² + 2ab.

c) (a² - b²)²

(a² - b²)(a² - b²)

a⁴ - a²b² - a²b² + b⁴

a⁴ - 2a²b² + b⁴.

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

A) (x²-5)(x²+5)+25

(x² - (5½)²) (x+5)+25

(x+5) (x-5) (x+5)+25

(x+5)² (x-5+25)

x²+5²+2×1×5 (x-20)

x²+25+10(x-20)

x³-20x²+25x-500+10x-200

= x³-20x²+35x-700 ANS.

C) (a+b+c) (a+b+c)

a²+ab-ac+ab+b²-bc+ac+bc-c²

a²+2ab+b²-c²

(a+b)²-c ANS.