Question

Multiply:
1. (x + 2) (x + 5)
2. (x-4) (x +9)
3. (x-7)(x-9)
5. (5x - 3y) (3x + 4y)
6. (5x² + 2y²) (3x² – 7y²)

Please solve this question fast​

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

1: x^2 + (2+5)x +(2)(5)

x^2+7x+10

2.. X^2+(-4+9)X + (-4)(9)

X^2+5x-36

3..... X^2+(-7-9)x+(-7)(-9)

X^2 - 16x + 63

All these question were done through identity

(x+a) (x+b)