0
Best Answer
a+b=-7
rearrange:
b= -a-7=-(a+7)
substitute into:
ab=30
-a(a+7)=30
-a^2-7a-30=0
a^2+7a+30=0
x = complex number, therefore there are no two Real numbers that exist that satisfy these two conditions.
Wiki User
∙ 8y agoThis answer is:
More answers
Wiki User
∙ 8y agoThe two numbers are:-(1/2) i (root(71) - 7i)
and:
(1/2) i root(71) + 7i)
Approximate values: a = -3.5 - 4.21307 i, b = -3.5 + 4.21307 i
This answer is:
Add your answer:
Earn +20 ptsQ: What number multiplies to get 30 but adds to get -7?
Write your answer...
Submit
Still have questions?
Continue Learning about Math & Arithmetic
Related questions
What number multiplies to get -30 but adds to get -7?
Negative 10 and positive 3
What number multiplies by 144 and adds to 7?
Any number can multiply 144 and be added to 7!
What is a number that adds tp -7 and multiplies to -18?
-25
What multiplies into -720 but adds into 7?
-713
What multiplies to 18 and adds to -11?
7
What adds to 7 and multiplies to 49?
There is no answer, it is not possible
What multiplies to 6 and adds to 7?
6 and 1
What multiplies to negative 144 and adds to 7?
151
What adds up to 7 and multiplies to 6?
6*1
What multiplies to 3 and adds to 4?
7
What multiplies to get -168 and adds to get 17?
-151
What adds up to -7 and multiplies to 6?
-6 and -1.
Copyright ©2024 Infospace Holdings LLC, A System1 Company. All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Answers.