Kylpater569idn
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standard form Quadratic III. TRUE or TRUE or FALSE. Write the word TRUE if the statement is correct and write the word FALSE if not.

1. The trinomial 9x² + 30x + 25 is a perfect square when written as a square of a binomial is (3x + 5)²

2. If the sum and product of the roots are -7 and -18 respectively, then the quadratic equation is x²- 7x - 18 = 0.

3. It is more appropriate to use the method of factoring than extracting square roots in solving quadratic equation 4x² + 9 = 12x.

4. If the roots are 2 and -5, then the quadratic equation is x² + 3x - 10 = 0.

5. The quadratic equation x² + 5x + 7 = 0 have 2 solutions.

6. Two numbers whose sum is 17 and whose product is 72 are 8 and 9.

7. The quadratic equation that will give x1=5 and X²= -3 as solutions is x²- 2x - 15 = 0.

8. The product of (2r-5)(2r-5) is 4r²- 10r + 25.

9. The factors of 9t²-4 are (3t-2)(3t+2).

10. The standard form of (x + 5)²+ (x - 2)² = 37 is 2x² + 6x - 8 = 0.​

Sagot :

Cherrybarbozeidn

Answer:

1. True

2. false

the quadratic equation myst be x^2+7x-18=0

3. true

4. true

5. false

6. true

7.;true

8. false

it mst be

[tex]4r {}^{2} - 20r + 25[/tex]

9. true

10. true

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