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amaurio908
17.07.2019 •
Mathematics
98 points which are perfect square trinomials? select two options.
x2 − 9
x2 −100
x2 − 4x + 4
x2 + 10x + 25
x2 + 15x + 36
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Ответ:
Step-by-step explanation:
we know that
A trinomial in the form
is said to be perfect square, if only it satisfies the condition ![b^{2}=4ac](/tpl/images/1296/2681/933c1.png)
Squaring a binomial creates a perfect square trinomial
so
Verify each case
case 1) x^2-9
in this problem we have
so
Is not a perfect square trinomial
case 2) x^2-100
in this problem we have
so
Is not a perfect square trinomial
case 3) x^2-4x+4
in this problem we have
so
Is a perfect square trinomial
case 4) x^2+10x+25
in this problem we have
so
Is a perfect square trinomial
case 5) x^2+15x+36
in this problem we have
so
Is not a perfect square trinomial
Ответ:
b the table represents a genetic